Update safety comments to cite specific versions

[varun-doshi]

Related issue #1655

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.40%. Comparing base (1271aa0) to head (02727cd).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1835   +/-   ##
=======================================
  Coverage   87.40%   87.40%           
=======================================
  Files          16       16           
  Lines        5995     5995           
=======================================
  Hits         5240     5240           
  Misses        755      755           

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[jswrenn]

Thank you! There's one link you missed. Could you also run ./cargo.sh +stable fmt?

[jswrenn]

Suggested change

	/// [2] https://doc.rust-lang.org/stable/std/num/type.NonZeroI8.html
	/// [2] https://doc.rust-lang.org/1.81.0/std/num/type.NonZeroI8.html

[joshlf]

Thanks for this! One small nit.

[joshlf]

Suggested change

	/// [1] https://doc.rust-lang.org/1.81.0/std/num/type.NonZeroU8.html
	/// `NonZeroU8 is guaranteed to have the same layout and bit validity as u8 with
	/// the exception that 0 is not a valid instance`
	/// [2] https://doc.rust-lang.org/1.81.0/std/num/type.NonZeroI8.html
	/// [1] Per https://doc.rust-lang.org/1.81.0/std/num/type.NonZeroU8.html:
	///
	/// `NonZeroU8` is guaranteed to have the same layout and bit validity as `u8` with
	/// the exception that 0 is not a valid instance
	///
	/// [2] https://doc.rust-lang.org/1.81.0/std/num/type.NonZeroI8.html

The backticks are used around code items like NonZeroU8 or u8, not around the entire quote. Also, add a newline before (and in the case where there's another citation afterward, a newline after as well).

jswrenn's comments were addressed