Request form: labels communicate required data format

[AnnaGingle]

Issue description

As a user who relies on clear and accessible form instructions,
I want the form fields in the request form to have consistent and descriptive labels that communicate the expected data format,
so that I can input my information without confusion, ensuring the form fully complies with Section 508 accessibility standards.

Acceptance Criteria

• Review the request form audit created as a part of Request form: Accessibility audit #2866
• Complete the A/C for Request form: .gov domain required data format #2872
• Update the .gov domain page design to ensure that required fields (What .gov domain do you want?) are clearly marked as required.
• Complete A/C for Request form: Current websites required data format #2877
• Create a dev ticket to implement the changes.

Additional Context

See slack thread.

Here is an example of a an input field in the request form that fails 5.B Forms Descriptive Label.

References for creating a dev ticket with accessibility requirements in the A/C

• Request form: Current website screen reader output #2871
• Bundle: DS data and helper text. #2849

Issue Links

Relates to Required fields in the request form are marked as required
#2698

[gabydisarli]

@AnnaGingle I adjusted the language in this ticket to address fields in the domain management pages.

[AnnaGingle]

@gabydisarli I don't think I could get the domain management and request form done in one sprint. I will remove domain management for now.

[gabydisarli]

@gabydisarli I don't think I could get the domain management and request form done in one sprint. I will remove domain management for now.

Sounds good to me!