Gather subset fix (#49264)

*  reword subset description for ios_facts

lib/ansible/modules/network/ios/ios_facts.py

@@ -38,12 +38,12 @@ notes:
 options:
   gather_subset:
     description:
-      - When supplied, this argument will restrict the facts collected
-        to a given subset.  Possible values for this argument include
-        all, hardware, config, and interfaces.  Can specify a list of
-        values to include a larger subset.  Values can also be used
-        with an initial C(M(!)) to specify that a specific subset should
-        not be collected.
+      - When supplied, this argument restricts the facts collected
+         to a given subset.
+      - Possible values for this argument include
+         C(all), C(hardware), C(config), and C(interfaces).
+      - Specify a list of values to include a larger subset.
+      - Use a value with an initial C(!) to collect all facts except that subset.
     required: false
     default: '!config'
 """