[VIRTS-3047] Update Config api docs

[bleepbop]

Description

Added descriptions and summaries to v2 Config API endpoints.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

Verified updates were successful by viewing swagger docs after server startup.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• [NA] I have added tests that prove my fix is effective or that my feature works

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #2353 (a6bb4d7) into master (f81bcc6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2353   +/-   ##
=======================================
  Coverage   72.60%   72.60%           
=======================================
  Files         110      110           
  Lines        7946     7946           
=======================================
  Hits         5769     5769           
  Misses       2177     2177           

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