Custom field description is not displayed in the article or category editor form

Pull Request for Issue # .

Summary of Changes

The description text of the custom field should be displayed in the article editing window.

before without description in Article/Category Editor:

after:

Testing Instructions

Go to "Content - Fields". Create a custom field, e.g. textarea. Insert a text in the field "Description" and save and close.

Go to Content - Articles. Create or edit an article. In the "Fields" tab, it should display the description text for the custom field.

The same should be done for the custom fields of the categories.

Actual result BEFORE applying this Pull Request

The field description of the custom field is not displayed in the Article or Category form.

Expected result AFTER applying this Pull Request

Documentation Changes Required