Fix M(). (#591)

* Fix M().

* Break long line.

* Fix the remaining M(...).

* Break long line.

plugins/modules/cloud/digital_ocean/digital_ocean.py

@@ -15,7 +15,7 @@ short_description: Create/delete a droplet/SSH_key in DigitalOcean
 deprecated:
   removed_in: 2.0.0  # was Ansible 2.12
   why: Updated module to remove external dependency with increased functionality.
-  alternative: Use M(digital_ocean_droplet) instead.
+  alternative: Use M(community.general.digital_ocean_droplet) instead.
 description:
      - Create/delete a droplet in DigitalOcean and optionally wait for it to be 'running', or deploy an SSH key.
 author: "Vincent Viallet (@zbal)"

plugins/modules/cloud/digital_ocean/digital_ocean_sshkey_facts.py

@@ -15,7 +15,7 @@ module: digital_ocean_sshkey_facts
 deprecated:
   removed_in: 3.0.0  # was Ansible 2.13
   why: Deprecated in favour of C(_info) module.
-  alternative: Use M(digital_ocean_sshkey_info) instead.
+  alternative: Use M(community.general.digital_ocean_sshkey_info) instead.
 short_description: DigitalOcean SSH keys facts
 description:
      - Fetch DigitalOcean SSH keys facts.

plugins/modules/cloud/digital_ocean/digital_ocean_volume_info.py

@@ -20,7 +20,7 @@ options:
   region_name:
     description:
      - Name of region to restrict results to volumes available in a specific region.
-     - Please use M(digital_ocean_region_info) for getting valid values related regions.
+     - Please use M(community.general.digital_ocean_region_info) for getting valid values related regions.
     required: false
 
 requirements: