Avoid having module documentation links to itself (#21329)

* Avoid having module documentation links to itself

A lot of modules use M(own_module) in their documentation causing a link
in the documentation to itself.

* Make note more clear now

lib/ansible/modules/files/archive.py

@@ -30,7 +30,7 @@ version_added: 2.3
 short_description: Creates a compressed archive of one or more files or trees.
 extends_documentation_fragment: files
 description:
-     - The M(archive) module packs an archive. It is the opposite of the unarchive module. By default, it assumes the compression source exists on the target. It will not copy the source file from the local system to the target before archiving. Source files can be deleted after archival by specifying C(remove)=I(True).
+     - The C(archive) module packs an archive. It is the opposite of the unarchive module. By default, it assumes the compression source exists on the target. It will not copy the source file from the local system to the target before archiving. Source files can be deleted after archival by specifying C(remove)=I(True).
 options:
   path:
     description:

lib/ansible/modules/files/assemble.py

@@ -31,7 +31,7 @@ description:
      - Assembles a configuration file from fragments. Often a particular
        program will take a single configuration file and does not support a
        C(conf.d) style structure where it is easy to build up the configuration
-       from multiple sources. M(assemble) will take a directory of files that can be
+       from multiple sources. C(assemble) will take a directory of files that can be
        local or have already been transferred to the system, and concatenate them
        together to produce a destination file. Files are assembled in string sorting order.
        Puppet calls this idea I(fragments).

lib/ansible/modules/files/copy.py

@@ -28,7 +28,7 @@ module: copy
 version_added: "historical"
 short_description: Copies files to remote locations.
 description:
-     - The M(copy) module copies a file on the local box to remote locations. Use the M(fetch) module to copy files from remote locations to the local box. If you need variable interpolation in copied files, use the M(template) module.
+     - The C(copy) module copies a file on the local box to remote locations. Use the M(fetch) module to copy files from remote locations to the local box. If you need variable interpolation in copied files, use the M(template) module.
 options:
   src:
     description:

lib/ansible/modules/files/file.py

@@ -31,7 +31,7 @@ extends_documentation_fragment: files
 description:
      - Sets attributes of files, symlinks, and directories, or removes
        files/symlinks/directories. Many other modules support the same options as
-       the M(file) module - including M(copy), M(template), and M(assemble).
+       the C(file) module - including M(copy), M(template), and M(assemble).
 notes:
     - See also M(copy), M(template), M(assemble)
 requirements: [ ]
@@ -53,7 +53,7 @@ options:
         or M(template) module if you want that behavior.  If C(link), the symbolic
         link will be created or changed. Use C(hard) for hardlinks. If C(absent),
         directories will be recursively deleted, and files or symlinks will be unlinked.
-        Note that M(file) will not fail if the C(path) does not exist as the state did not change.
+        Note that C(file) will not fail if the C(path) does not exist as the state did not change.
         If C(touch) (new in 1.4), an empty file will be created if the C(path) does not
         exist, while an existing file or directory will receive updated file access and
         modification times (similar to the way `touch` works from the command line).

lib/ansible/modules/files/tempfile.py

@@ -30,7 +30,7 @@ author:
   - Krzysztof Magosa
 short_description: Creates temporary files and directories.
 description:
-  - The M(tempfile) module creates temporary files and directories. C(mktemp) command takes different parameters on various systems, this module helps to avoid troubles related to that. Files/directories created by module are accessible only by creator. In case you need to make them world-accessible you need to use M(file) module.
+  - The C(tempfile) module creates temporary files and directories. C(mktemp) command takes different parameters on various systems, this module helps to avoid troubles related to that. Files/directories created by module are accessible only by creator. In case you need to make them world-accessible you need to use M(file) module.
 options:
   state:
     description:

lib/ansible/modules/files/unarchive.py

@@ -32,7 +32,7 @@ version_added: 1.4
 short_description: Unpacks an archive after (optionally) copying it from the local machine.
 extends_documentation_fragment: files
 description:
-     - The M(unarchive) module unpacks an archive. By default, it will copy the source file from the local system to the target before unpacking - set remote_src=yes to unpack an archive which already exists on the target..
+     - The C(unarchive) module unpacks an archive. By default, it will copy the source file from the local system to the target before unpacking - set remote_src=yes to unpack an archive which already exists on the target..
 options:
   src:
     description: