Add extends_documentation_fragment back (#22293)

lib/ansible/modules/network/vyos/vyos_command.py

@@ -38,6 +38,7 @@ description:
     use a custom pager that can cause this module to hang.  If the
     value of the environment variable C(ANSIBLE_VYOS_TERMINAL_LENGTH)
     is not set, the default number of 10000 is used.
+extends_documentation_fragment: vyos
 options:
   commands:
     description:

lib/ansible/modules/network/vyos/vyos_config.py

@@ -34,6 +34,7 @@ description:
     configuration file and state of the active configuration.   All
     configuration statements are based on `set` and `delete` commands
     in the device configuration.
+extends_documentation_fragment: vyos
 options:
   lines:
     description:

lib/ansible/modules/network/vyos/vyos_facts.py

@@ -33,6 +33,7 @@ description:
     base network fact keys with U(ansible_net_<fact>).  The facts
     module will always collect a base set of facts from the device
     and can enable or disable collection of additional facts.
+extends_documentation_fragment: vyos
 options:
   gather_subset:
     description:

lib/ansible/modules/network/vyos/vyos_system.py

@@ -33,6 +33,7 @@ description:
   - Runs one or more commands on remote devices running VyOS.
     This module can also be introspected to validate key parameters before
     returning successfully.
+extends_documentation_fragment: vyos
 options:
   hostname:
     description: