Fix M(). (#591)

* Fix M().

* Break long line.

* Fix the remaining M(...).

* Break long line.

plugins/modules/database/postgresql/postgresql_membership.py

@@ -16,8 +16,8 @@ description:
 - Users are roles with login privilege.
 - Groups are PostgreSQL roles usually without LOGIN privilege.
 - "Common use case:"
-- 1) add a new group (groups) by M(postgresql_user) module with I(role_attr_flags=NOLOGIN)
-- 2) grant them desired privileges by M(postgresql_privs) module
+- 1) add a new group (groups) by M(community.general.postgresql_user) module with I(role_attr_flags=NOLOGIN)
+- 2) grant them desired privileges by M(community.general.postgresql_privs) module
 - 3) add desired PostgreSQL users to the new group (groups) by this module
 options:
   groups:

plugins/modules/database/postgresql/postgresql_pg_hba.py

@@ -105,7 +105,7 @@ notes:
      This could give unexpected results with manual created hba files, if it was improperly sorted.
      For example a rule was created for a net first and for a ip in that net range next.
      In that situation, the 'ip specific rule' will never hit, it is in the C(pg_hba) file obsolete.
-     After the C(pg_hba) file is rewritten by the M(postgresql_pg_hba) module, the ip specific rule will be sorted above the range rule.
+     After the C(pg_hba) file is rewritten by the M(community.general.postgresql_pg_hba) module, the ip specific rule will be sorted above the range rule.
      And then it will hit, which will give unexpected results.
    - With the 'order' parameter you can control which field is used to sort first, next and last.
    - The module supports a check mode and a diff mode.

plugins/modules/database/postgresql/postgresql_query.py

@@ -15,7 +15,7 @@ short_description: Run PostgreSQL queries
 description:
 - Runs arbitrary PostgreSQL queries.
 - Can run queries from SQL script files.
-- Does not run against backup files. Use M(postgresql_db) with I(state=restore)
+- Does not run against backup files. Use M(community.general.postgresql_db) with I(state=restore)
   to run queries on files made by pg_dump/pg_dumpall utilities.
 options:
   query:

plugins/modules/database/postgresql/postgresql_set.py

@@ -21,7 +21,7 @@ description:
    - The module allows to reset parameter to boot_val (cluster initial value) by I(reset=yes) or remove parameter
      string from postgresql.auto.conf and reload I(value=default) (for settings with postmaster context restart is required).
    - After change you can see in the ansible output the previous and
-     the new parameter value and other information using returned values and M(debug) module.
+     the new parameter value and other information using returned values and M(ansible.builtin.debug) module.
 options:
   name:
     description: