rustdoc: Break words in the location box of the sidebar.

[Eijebong]

This prevents long names from overflowing.

Before:

After:

[rust-highfive]

Some changes occurred in HTML/CSS.

cc @GuillaumeGomez

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @frewsxcv (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. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed.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.

Please see the contribution instructions for more information.

[shepmaster]

Thanks for the PR! We'll get @GuillaumeGomez or @frewsxcv to check it out in a reasonable amount of time!

[GuillaumeGomez]

Nothing to say, thanks for the PR! (I tested with normal items, still good.)

@bors: r+ rollup

[bors]

📌 Commit 26e7e49 has been approved by GuillaumeGomez