📝 Add naming conventions for limit variables in documentation

[chris-ashe]

This pull request includes a small change to the documentation/proc-pages/development/standards.md file. The change adds a note on naming conventions for limit variables, specifying the use of _max, _min, and _peak in variable names.

• documentation/proc-pages/development/standards.md: Added a note on naming conventions for limit variables, specifying _max, _min, and _peak for upper, lower, and highest measured values respectively.

Checklist

I confirm that I have completed the following checks:

• My changes follow the PROCESS style guide
• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 31.20%. Comparing base (ecf30f1) to head (4921d0b).
⚠️ Report is 465 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3590   +/-   ##
=======================================
  Coverage   31.20%   31.20%           
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  Files          83       83           
  Lines       19943    19943           
=======================================
  Hits         6223     6223           
  Misses      13720    13720           

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