Clarify minimum mise version required to use mise use prek

[j178]

For #682 (comment)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.02%. Comparing base (c8b69c6) to head (1e1f271).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #931   +/-   ##
=======================================
  Coverage   90.02%   90.02%           
=======================================
  Files          64       64           
  Lines       11999    11999           
=======================================
  Hits        10802    10802           
  Misses       1197     1197           

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