Minor reparis to release notes and merge parts doscs

We broke the Evergreen docs build and think it may be related to starting
a line with ``++V.1++''. This is an attempt to fix it.

Signed-off-by: Kathy Lussier <klussier@masslnc.org>
Merge remote-tracking branch 'upstream/master'
Docs: Fix filenames to match references in the docs - second time

This is just like the fix that Remington Steed sent in on Sept 4th.

These images were creating errors for me when I try to create
an epub version of the docs because they are all referenced as .jpg
but the filenames were .JPG.

Signed-off-by: Josh Stompro <github@stompro.org>