Update links to templates

[jjngx]

Proposed changes

Update links to templates in the README.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[codecov]

Codecov Report

Merging #4435 (1cc2012) into main (0fb6f91) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #4435      +/-   ##
==========================================
- Coverage   52.12%   52.11%   -0.02%     
==========================================
  Files          59       59              
  Lines       16956    16956              
==========================================
- Hits         8838     8836       -2     
- Misses       7821     7823       +2     
  Partials      297      297              

see 1 file with indirect coverage changes

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