Add link to PQ documentation

[justsmth]

Issues:

Addresses CryptoAlg-2739

Description of changes:

Describe current behavior and how your code changes that behavior. If there are no issues this pr is resolving, explain why this change is necessary.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.62%. Comparing base (c358484) to head (f44c32f).
Report is 109 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #593      +/-   ##
==========================================
- Coverage   95.80%   92.62%   -3.18%     
==========================================
  Files          61       67       +6     
  Lines        8143     9544    +1401     
  Branches        0     9544    +9544     
==========================================
+ Hits         7801     8840    +1039     
- Misses        342      430      +88     
- Partials        0      274     +274     

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