Fix the spelling.

src/backend/utils/misc/postgresql.conf.sample

@@ -47,8 +47,8 @@
 # - Connection Settings -
 
 #listen_addresses = 'localhost'		# what IP address(es) to listen on; 
-					# comma seperated;
-					# defaults to localhost, '*' = all
+					# comma-separated list of addresses;
+					# defaults to 'localhost', '*' = all
 #port = 5432
 #max_connections = 100
 # note: increasing max_connections costs ~400 bytes of shared memory per