In the bug fixes per release tool, we got a list of bug reports that
were fixed by a commit using a regular expression that pulled the
number from `#NUMBER`.
However in specific situations, this resulted in the retrieval of the
wrong issue numbers, and ultimately a mis-classification of a
fix commit.
For example 778b1efd84 contains `Fixes blender/blender-manual#NUMBER`
We were extracting the NUMBER from this and treating it as if it was
a bug report for the `blender/blender` repository, which means it
points to the wrong bug report.
This commit fixes this issue by taking a simple approach of only
checking for report numbers that match the format:
`SPACE#NUMBER`, which will eliminate cases like
`blender/blender-manual#NUMBER`.
Pull Request: https://projects.blender.org/blender/blender/pulls/136744