Added docs fragment for proxysql (#32502)

* Added docs fragment for proxysql

* Added formatting for option names, and bool types

* Updated proxysql modules to use doc fragments

lib/ansible/modules/database/proxysql/proxysql_replication_hostgroups.py

@@ -37,36 +37,9 @@ options:
         removes the replication hostgroup.
     choices: [ "present", "absent" ]
     default: present
-  save_to_disk:
-    description:
-      - Save mysql host config to sqlite db on disk to persist the
-        configuration.
-    default: True
-  load_to_runtime:
-    description:
-      - Dynamically load mysql host config to runtime memory.
-    default: True
-  login_user:
-    description:
-      - The username used to authenticate to ProxySQL admin interface.
-    default: None
-  login_password:
-    description:
-      - The password used to authenticate to ProxySQL admin interface.
-    default: None
-  login_host:
-    description:
-      - The host used to connect to ProxySQL admin interface.
-    default: '127.0.0.1'
-  login_port:
-    description:
-      - The port used to connect to ProxySQL admin interface.
-    default: 6032
-  config_file:
-    description:
-      - Specify a config file from which login_user and login_password are to
-        be read.
-    default: ''
+extends_documentation_fragment:
+  - proxysql.managing_config
+  - proxysql.connectivity
 '''
 
 EXAMPLES = '''