This test has 2 async parts, loading the markdown file and the marked parsing.
First attempt to fix the flakiness is by inline the markdown file.
If this test timeouts again in the future it means the timeout is related to marked itself (and the dynamic import of mermaid).
PR Close#59994
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
