Issue 95 committee documentation

[Games4Doritos]

Change Summary

• Added documentation for the Committee model (admin-dashboard/committee), including its fields and its relation to the Member model
• Added documentation for the about/committee page (pages/about-committee), describing the description, committee portraits, and where the hardcoded content, for the committee to alter, resides
• Added comments in about.tsx to show where the hardcoded content is, in the file

Change Form

• The pull request title has an issue number
• The change works by "Smoke testing" or quick testing
• The change has tests
• The change has documentation

Other Information

Related issue

• Resolve committee documentation #95