Fix #231, Rename Getting Started in Contributing.md

[ArielSAdamsNASA]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution
Fixes #231

• Renamed Getting Started to Quick Links to Submodules
• Linked the Report Bugs and Feature Requests sections in Quick Links to Submodules
• Linked Quick Links to Submodules in the Report Bugs section
• Linked Quick Links to Submodules in the Feature Requests sections

Testing performed
Tested links locally.

Expected behavior changes
Users should know all the submodules where bugs or feature requests may be reported.

Contributor Info - All information REQUIRED for consideration of pull request
Ariel Adams, ASRC Federal

[skliper]

CCB:2021-04-14 - APPROVED