lix-doc: don't chomp bold headings off

There are a few places in nixpkgs lib where `**Foo**:` is used as a heading instead of the usual markdown `# Foo` ones. I think this is intentional with how it gets rendered in the manual, e.g. [`lib.lists.sortOn`][1].

[1]: https://nixos.org/manual/nixpkgs/stable/#function-library-lib.lists.sortOn

`nix-doc` prints this as
```
   *Laws**:
       ```nix
       sortOn f == sort (p: q: f p < f q)
       ```
```
chomping off the first asterisk as part of `cleanup_single_line` that's meant to deal with `/** \n * \n * \n */` style doc comments. This also means the usage in lix ends up funny-looking with a trailing asterisk as if there's a footnote to pay attention to (which is how I first noticed it, heh)

The fix:

When cleaning up a single line and removing a prefix comment character,
ensure it's followed by whitespace (or the last character of the line).

Upstream-PR: https://github.com/lf-/nix-doc/pull/26
Change-Id: If2870c53a632f6bbbcca98a4bfbd72f5bef37879

0 files changed, 0 insertions, 0 deletions