add detailed help for get command

[theganyo]

No description provided.

[codecov]

Codecov Report

Merging #1217 (1a22f97) into main (74166d9) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1217      +/-   ##
==========================================
+ Coverage   71.86%   71.95%   +0.09%     
==========================================
  Files         146      146              
  Lines       12197    12239      +42     
==========================================
+ Hits         8765     8807      +42     
  Misses       2749     2749              
  Partials      683      683              

Files Changed	Coverage Δ
cmd/registry/cmd/get/get.go	80.47% <100.00%> (+3.27%)	⬆️

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[timburks]

Thanks, I like the use of NAME instead of ID, preferring consistency with the YAML experience over the lower-level AIP style. It's unfortunate that they don't match, but I think the YAML conventions are more relevant.