fix: fix formatting error in issue template and add m2r2 as docs dependency

[zmx27]

Closes#161

[zmx27]

@sbillinge ready for review.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.97%. Comparing base (553a2a2) to head (60e05b3).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #164 +/- ##
=======================================
Coverage 98.97% 98.97% =======================================
Files 6 6 Lines 1270 1270 =======================================
Hits 1257 1257 Misses 13 13 

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