Fix M(). (#591)

* Fix M().

* Break long line.

* Fix the remaining M(...).

* Break long line.

plugins/modules/system/interfaces_file.py

@@ -15,7 +15,7 @@ short_description: Tweak settings in /etc/network/interfaces files
 extends_documentation_fragment: files
 description:
      - Manage (add, remove, change) individual interface options in an interfaces-style file without having
-       to manage the file as a whole with, say, M(template) or M(assemble). Interface has to be presented in a file.
+       to manage the file as a whole with, say, M(ansible.builtin.template) or M(ansible.builtin.assemble). Interface has to be presented in a file.
      - Read information about interfaces from interfaces-styled files
 options:
   dest:

plugins/modules/system/ohai.py

@@ -13,7 +13,7 @@ DOCUMENTATION = '''
 module: ohai
 short_description: Returns inventory data from I(Ohai)
 description:
-     - Similar to the M(facter) module, this runs the I(Ohai) discovery program
+     - Similar to the M(community.general.facter) module, this runs the I(Ohai) discovery program
        (U(https://docs.chef.io/ohai.html)) on the remote host and
        returns JSON inventory data.
        I(Ohai) data is a bit more verbose and nested than I(facter).

plugins/modules/system/sefcontext.py

@@ -69,7 +69,7 @@ options:
     default: no
 notes:
 - The changes are persistent across reboots.
-- The M(sefcontext) module does not modify existing files to the new
+- The M(community.general.sefcontext) module does not modify existing files to the new
   SELinux context(s), so it is advisable to first create the SELinux
   file contexts before creating files, or run C(restorecon) manually
   for the existing files that require the new SELinux file contexts.

plugins/modules/system/timezone.py

@@ -12,7 +12,8 @@ DOCUMENTATION = r'''
 module: timezone
 short_description: Configure timezone setting
 description:
-  - This module configures the timezone setting, both of the system clock and of the hardware clock. If you want to set up the NTP, use M(service) module.
+  - This module configures the timezone setting, both of the system clock and of the hardware clock.
+    If you want to set up the NTP, use M(ansible.builtin.service) module.
   - It is recommended to restart C(crond) after changing the timezone, otherwise the jobs may run at the wrong time.
   - Several different tools are used depending on the OS/Distribution involved.
     For Linux it can use C(timedatectl) or edit C(/etc/sysconfig/clock) or C(/etc/timezone) and C(hwclock).