Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

lib/ansible/modules/network/cloudengine/ce_startup.py

@@ -34,31 +34,22 @@ options:
         description:
             - Name of the configuration file that is applied for the next startup.
               The value is a string of 5 to 255 characters.
-        required: false
         default: present
     software_file:
         description:
             - File name of the system software that is applied for the next startup.
               The value is a string of 5 to 255 characters.
-        required: false
-        default: null
     patch_file:
         description:
             - Name of the patch file that is applied for the next startup.
-        required: false
-        default: null
     slot:
         description:
             - Position of the device.The value is a string of 1 to 32 characters.
               The possible value of slot is all, slave-board, or the specific slotID.
-        required: false
-        default: null
     action:
         description:
             - Display the startup information.
-        required: false
         choices: ['display']
-        default: null
 
 '''