Rustdoc 1.67.0 combining supertraits into single line even if it's 1000 characters long

[tspiteri]

I generated documentation for the fixed crate, and the issue is clear in the documentation for the fixed::traits::Fixed trait.

Version 1.66.1 (90743e7 2023-01-10) produces something like this:

Version 1.67.0-beta.10 (2276448 2023-01-22) produces something like this:

That's over a 1000 characters squashed into a single line.

[tspiteri]

The situation is now better, as the excessively long line is now broken.

I think this can be closed.