Merge pull request #1035 from datalad-handbook/light-image-faq

replace dark figure with light alternative

docs/basics/101-180-FAQ.rst

@@ -546,7 +546,7 @@ Help - Why does Github display my dataset with git-annex as the default branch?
 If your dataset is represented on GitHub with cryptic directories instead of actual file names, GitHub probably declared the :term:`git-annex branch` to be your repositories "default branch".
 Here is an example:
 
-.. figure:: ../artwork/src/defaultgitannex.png
+.. figure:: ../artwork/src/defaultgitannex_light.png
 
 This is related to GitHub's decision to make ``main`` `the default branch for newly created repositories <https://github.blog/changelog/2020-10-01-the-default-branch-for-newly-created-repositories-is-now-main>`_ -- datasets that do not have a ``main`` branch (but for example a ``master`` branch) may end up with a different branch being displayed on GitHub than intended.