modules: fix examples to use FQCN (#644)

* modules: fix examples to use FQCN

* fix

* fix

* fix

plugins/modules/source_control/hg.py

@@ -69,14 +69,14 @@ notes:
 
 EXAMPLES = '''
 - name: Ensure the current working copy is inside the stable branch and deletes untracked files if any.
-  hg:
+  community.general.hg:
     repo: https://bitbucket.org/user/repo1
     dest: /home/user/repo1
     revision: stable
     purge: yes
 
 - name: Get information about the repository whether or not it has already been cloned locally.
-  hg:
+  community.general.hg:
     repo: git://bitbucket.org/user/repo
     dest: /srv/checkout
     clone: no