MXS-1220: Remove redundant parameter documentation

As all requests support the only parameter `pretty`, there's no point in
documenting it separately for each resource.

Documentation/REST-API/Resources-Server.md

@@ -91,10 +91,6 @@ Server not found:
 Status: 404 Not Found
 ```
 
-#### Supported Request Parameter
-
-- `pretty`
-
 ### Get all servers
 
 ```
@@ -223,10 +219,6 @@ Status: 200 OK
 }
 ```
 
-#### Supported Request Parameter
-
-- `pretty`
-
 ### Create a server
 
 ```
@@ -478,10 +470,6 @@ Invalid JSON body:
 Status: 403 Forbidden
 ```
 
-#### Supported Request Parameter
-
-- `pretty`
-
 ### Destroy a server
 
 ```
@@ -525,8 +513,6 @@ GET /v1/servers/:name/connections
 
 #### Response
 
-#### Supported Request Parameter
-
 ### Close all connections to a server
 
 Close all connections to a particular server. This will forcefully close all