[pg15] fix: remove postgres documentation URLs from psql \help output

Summary:
Remove URLs linking to postgres documentation (introduced by upstream PG commit
27f3dea64833d68c1fa08c1e5d26176a579f69c8) from psql \help output.

Since YB introduces additional syntax, disabling URLs across the board simplifies
the help output, avoiding potential confusion caused by URLs pointing to
non-existent/wrong documentation.

Test Plan:
for _ in {1..10}; do grep -E "TestPgRegressTablegroup|TestPgRegressProfile" pg15_tests/passing_tests.tsv; done | pg15_tests/run_tests.sh

Reviewers: jason

Reviewed By: jason

Subscribers: yql

Differential Revision: https://phorge.dev.yugabyte.com/D36505

src/postgres/src/bin/psql/help.c

@@ -702,23 +702,24 @@ helpSQL(const char *topic, unsigned short int pager)
 					strcmp(topic, "*") == 0)
 				{
 					PQExpBufferData buffer;
-					char	   *url;
+					/* YB: exclude links to postgres documentation. */
+					/* char	   *url; */
 
 					initPQExpBuffer(&buffer);
 					QL_HELP[i].syntaxfunc(&buffer);
-					url = psprintf("https://www.postgresql.org/docs/%s/%s.html",
+					/* url = psprintf("https://www.postgresql.org/docs/%s/%s.html",
 								   strstr(PG_VERSION, "devel") ? "devel" : PG_MAJORVERSION,
-								   QL_HELP[i].docbook_id);
+								   QL_HELP[i].docbook_id); */
 					/* # of newlines in format must match constant above! */
 					fprintf(output, _("Command:     %s\n"
 									  "Description: %s\n"
-									  "Syntax:\n%s\n\n"
-									  "URL: %s\n\n"),
+									  "Syntax:\n%s\n\n"),
+									  /* "URL: %s\n\n"), */
 							QL_HELP[i].cmd,
 							_(QL_HELP[i].help),
-							buffer.data,
-							url);
-					free(url);
+							buffer.data);
+							/* url); */
+					/* free(url); */
 					termPQExpBuffer(&buffer);
 
 					/* If we have an exact match, exit.  Fixes \h SELECT */

src/postgres/src/test/regress/expected/yb_profile.out

@@ -83,8 +83,6 @@ CREATE PROFILE profile_name LIMIT
   FAILED_LOGIN_ATTEMPTS number;
   [PASSWORD_LOCK_TIME days];
 
-URL: https://www.postgresql.org/docs/15/sql-createprofile.html
-
 --
 -- Test \h DROP PROFILE
 --
@@ -94,8 +92,6 @@ Description: remove a login profile
 Syntax:
 DROP PROFILE profile_name;
 
-URL: https://www.postgresql.org/docs/15/sql-dropprofile.html
-
 --
 -- Test \h ALTER USER
 --
@@ -134,8 +130,6 @@ where role_specification can be:
   | CURRENT_USER
   | SESSION_USER
 
-URL: https://www.postgresql.org/docs/15/sql-alteruser.html
-
 --
 -- Test \h ALTER ROLE
 --
@@ -173,5 +167,3 @@ where role_specification can be:
   | CURRENT_ROLE
   | CURRENT_USER
   | SESSION_USER
-
-URL: https://www.postgresql.org/docs/15/sql-alterrole.html

src/postgres/src/test/regress/expected/yb_tablegroup.out

@@ -7,25 +7,19 @@ Description: define a new tablegroup
 Syntax:
 CREATE TABLEGROUP tablegroup_name
 
-URL: https://www.postgresql.org/docs/15/sql-createtablegroup.html
-
 \h ALTER TABLEGROUP
 Command:     ALTER TABLEGROUP
 Description: change the definition of a tablegroup
 Syntax:
 ALTER TABLEGROUP name RENAME TO new_name
 ALTER TABLEGROUP name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
 
-URL: https://www.postgresql.org/docs/15/sql-altertablegroup.html
-
 \h DROP TABLEGROUP
 Command:     DROP TABLEGROUP
 Description: remove a tablegroup
 Syntax:
 DROP TABLEGROUP name
 
-URL: https://www.postgresql.org/docs/15/sql-droptablegroup.html
-
 --
 -- pg_catalog alterations. Validate columns of pg_yb_tablegroup and oids.
 --