Fix the DRS version in documentation and service-info.

[yash-puligundla]

• Fix the DRS version in the documentation and the service-info response to "1.3.0experimental"
• Add a note on the admin endpoints indicating they are beyond the DRS specification

[codecov-commenter]

Codecov Report

Merging #75 (cd2e61d) into develop (3d5cf79) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff             @@
##             develop      #75   +/-   ##
==========================================
  Coverage      65.06%   65.06%           
  Complexity       241      241           
==========================================
  Files             51       51           
  Lines            873      873           
  Branches          60       60           
==========================================
  Hits             568      568           
  Misses           294      294           
  Partials          11       11           

Impacted Files	Coverage Δ
...tarterkit/drs/constant/DrsServiceInfoDefaults.java	100.00% <ø> (ø)

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