fix: Fix typo in std-index template

[kesara]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.44%. Comparing base (5775077) to head (d15a8c4).
⚠️ Report is 45 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10671      +/-   ##
==========================================
+ Coverage   88.39%   88.44%   +0.05%     
==========================================
  Files         326      330       +4     
  Lines       43813    44317     +504     
==========================================
+ Hits        38727    39195     +468     
- Misses       5086     5122      +36     

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