Add FAQ on transcript graduation dates

[ehcarter]

Adding a new FAQ for candidates whose transcripts don't show their expected graduation date

PLEASE REMOVE EXPLANATORY TEXT AND UNNEEDED SECTIONS BEFORE CREATING PULL REQUEST. CREATE A DRAFT PULL REQUEST IF YOU INTEND TO ADD MORE COMMITS. REMOVE DRAFT STATUS AND REQUEST REVIEW FROM THE US Digital Corps TEAM WHEN YOU ARE READY TO COMMIT CHANGES.

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation, context, and sources of information.

Fixes #
Added an FAQ about what to do if a transcript does not show graduation dates

Checklist

• My code follows the existing style, code structure, and naming taxonomy
• I have performed a self-review of my own code and have no open issues
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings or syntax errors
• I have verified Draft on actual mobile devices, especially Safari-based