Retry DLQ Docs refactoring

[sm745052]

Fixes b/467207908

updated documentation to use retry dlq mode

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.23%. Comparing base (f3614aa) to head (043b4aa).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1253   +/-   ##
=======================================
  Coverage   47.22%   47.23%           
=======================================
  Files         231      231           
  Lines       26693    26693           
  Branches      581      581           
=======================================
+ Hits        12606    12608    +2     
+ Misses      13366    13364    -2     
  Partials      721      721           

Components	Coverage Δ
backend-apis	42.11% <ø> (ø)
backend-library	51.59% <ø> (ø)
cli	24.44% <ø> (ø)
frontend	38.82% <ø> (+0.04%)	⬆️
see 1 file with indirect coverage changes

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