fix documentation in libserialize

[benaryorg]

perhaps the smallest and least useful fix in the whole history of rust

I will not blame you if you do not want to merge it

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @pcwalton (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. The way Github handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

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[steveklabnik]

@bors: r+ rollup

[bors]

📌 Commit 2029799 has been approved by steveklabnik

[bors]

⌛ Testing commit 2029799 with merge ee1ba33...

[steveklabnik]

Thank you! No patch is too small, and all patches have meaning. Please keep submitting them, regardless of size. You've helped make Rust better, and that's what matters.

[benaryorg]

I have to thank you, for both, Rust and this inspiring comment!

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-x-android-t, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt