[Doc] Change CN/EN sql-functions single quote in markdown (#6698)

docs/en/sql-reference/sql-functions/string-functions/bit_length.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'INT bit_length (VARCHAR str)'
+`INT bit_length (VARCHAR str)`
 
 
 Return length of argument in bits。

docs/en/sql-reference/sql-functions/string-functions/concat_ws.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR concat ws (VARCHAR sep., VARCHAR str,...)'
+`VARCHAR concat ws (VARCHAR sep., VARCHAR str,...)`
 
 
 Using the first parameter SEP as a connector, the second parameter and all subsequent parameters are spliced into a string.

docs/en/sql-reference/sql-functions/string-functions/get_json_double.md

@@ -28,7 +28,7 @@ under the License.
 ## description
 ### Syntax
 
-`DOUBLE get_json_double(VARCHAR json_str, VARCHAR json_path)
+`DOUBLE get_json_double(VARCHAR json_str, VARCHAR json_path)`
 
 
 Parse and get the floating-point content of the specified path in the JSON string.

docs/en/sql-reference/sql-functions/string-functions/get_json_int.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-`INT get_json_int(VARCHAR json_str, VARCHAR json_path)
+`INT get_json_int(VARCHAR json_str, VARCHAR json_path)`
 
 
 Parse and retrieve the integer content of the specified path in the JSON string.

docs/en/sql-reference/sql-functions/string-functions/get_json_string.md

@@ -28,7 +28,7 @@ under the License.
 ## description
 ### Syntax
 
-'VARCHAR get_json_string (VARCHAR json str, VARCHAR json path)
+`VARCHAR get_json_string (VARCHAR json str, VARCHAR json path)`
 
 
 Parse and retrieve the string content of the specified path in the JSON string.

docs/en/sql-reference/sql-functions/string-functions/instr.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'INSTR (VARCHAR STR, VARCHAR substrate)'
+`INSTR (VARCHAR STR, VARCHAR substrate)`
 
 
 Returns the location where substr first appeared in str (counting from 1). If substr does not appear in str, return 0.

docs/en/sql-reference/sql-functions/string-functions/left.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR left (VARCHAR str)'
+`VARCHAR left (VARCHAR str)`
 
 
 It returns the left part of a string of specified length, length is char length not the byte size.

docs/en/sql-reference/sql-functions/string-functions/length.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'INT length (VARCHAR str)'
+`INT length (VARCHAR str)`
 
 
 Returns the length of the string in byte size.

docs/en/sql-reference/sql-functions/string-functions/locate.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'INT LOCATION (VARCHAR substrate, VARCHAR str [, INT pos]]'
+`INT LOCATION (VARCHAR substrate, VARCHAR str [, INT pos]]`
 
 
 Returns where substr appears in str (counting from 1). If the third parameter POS is specified, the position where substr appears is found from the string where STR starts with POS subscript. If not found, return 0

docs/en/sql-reference/sql-functions/string-functions/lower.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'INT lower (VARCHAR str)'
+`INT lower (VARCHAR str)`
 
 
 Convert all strings in parameters to lowercase

docs/en/sql-reference/sql-functions/string-functions/lpad.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR lpad (VARCHAR str, INT len, VARCHAR pad)'
+`VARCHAR lpad (VARCHAR str, INT len, VARCHAR pad)`
 
 
 Returns a string of length len in str, starting with the initials. If len is longer than str, pad characters are added to STR until the length of the string reaches len. If len is less than str's length, the function is equivalent to truncating STR strings and returning only strings of len's length. The len is character length not the bye size.

docs/en/sql-reference/sql-functions/string-functions/ltrim.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR ltrim (VARCHAR str)'
+`VARCHAR ltrim (VARCHAR str)`
 
 
 Remove the space that appears continuously from the beginning of the parameter str

docs/en/sql-reference/sql-functions/string-functions/money_format.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-VARCHAR money format (Number)
+`VARCHAR money format (Number)`
 
 
 The number is output in currency format, the integer part is separated by commas every three bits, and the decimal part is reserved for two bits.

docs/en/sql-reference/sql-functions/string-functions/repeat.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR repeat (VARCHAR str, INT count)
+`VARCHAR repeat (VARCHAR str, INT count)`
 
 
 Repeat the str of the string count times, return empty string when count is less than 1, return NULL when str, count is any NULL

docs/en/sql-reference/sql-functions/string-functions/right.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR RIGHT (VARCHAR STR)'
+`VARCHAR RIGHT (VARCHAR STR)`
 
 
 It returns the right part of a string of specified length, length is char length not the byte size.

docs/en/sql-reference/sql-functions/string-functions/rpad.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR rpad (VARCHAR str, INT len, VARCHAR pad)'
+`VARCHAR rpad (VARCHAR str, INT len, VARCHAR pad)`
 
 
 Returns a string of length len in str, starting with the initials. If len is longer than str, pad characters are added to the right of STR until the length of the string reaches len. If len is less than str's length, the function is equivalent to truncating STR strings and returning only strings of len's length. The len is character length not the bye size.

docs/en/sql-reference/sql-functions/string-functions/split_part.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR split party (VARCHAR content, VARCHAR delimiter, INT field)'
+`VARCHAR split party (VARCHAR content, VARCHAR delimiter, INT field)`
 
 
 Returns the specified partition (counting from the beginning) by splitting the string according to the partitioner.

docs/en/sql-reference/sql-functions/string-functions/strleft.md

@@ -28,7 +28,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR STRAIGHT (VARCHAR STR)'
+`VARCHAR STRAIGHT (VARCHAR STR)`
 
 
 It returns the left part of a string of specified length, length is char length not the byte size.

docs/en/sql-reference/sql-functions/string-functions/strright.md

@@ -29,7 +29,7 @@ under the License.
 ## Description
 ### Syntax
 
-'VARCHAR strright (VARCHAR str)'
+`VARCHAR strright (VARCHAR str)`
 
 
 It returns the right part of a string of specified length, length is char length not the byte size.