* If we don't want any newlines in the result, it's better to use `>`
* If we want newlines (e.g. for markdown) then we should ensure the
string **only** contains the newlines we want, because GitHub (unlike
other markdown renderers) preserves single newlines in the output,
leading to ugly newlines dictated by the source.
Also remove a markdown-style link that isn't renderered as markdown.
PiperOrigin-RevId: 590309749
(cherry picked from commit e3bb79fe7a2cdd72bd24318ed182b2d8cf5dafb9)
