fix mmr doc

[roynalnaruto]

Nitpick fix in MMR module docs

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.54%. Comparing base (14572b4) to head (2f0094e).
⚠️ Report is 5 commits behind head on main.

@@            Coverage Diff             @@
##             main    #2499      +/-   ##
==========================================
- Coverage   92.54%   92.54%   -0.01%     
==========================================
  Files         341      341              
  Lines       97287    97287              
==========================================
- Hits        90037    90036       -1     
- Misses       7250     7251       +1     

see 1 file with indirect coverage changes

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