Before this commit, the docs-alert tests were failing. This also ensures that `NOTE:`, `TIP:` and others are always capitalized.
(cherry picked from commit ab5986dd5685d36e209972916cddb9dca8e0a557)
PR Close#60829
To increase the ease of development we are moving @angular/docs into the adev directory within this repo. While
we are doing this to improve our development experience in the short term, efforts are also in place
to maintain a division between this @angular/docs (shared) code and adev itself, so that it can be extracted
back out in the future when components is ready to leverage it as well.
PR Close#57132
