Updates to Docs#4

Merged

jposada202020 merged 3 commits intocircuitpython:mainfrom

lesamouraipourpre:docs

Jun 3, 2021

Commits on May 27, 2021

Update the PyPI and readthedocs links in README.rst
lesamouraipourpre
committed
Add cross-reference links to adafruit_displayio_layout
lesamouraipourpre
committed

Commits on Jun 3, 2021

Correct the Inheritance diagrams
lesamouraipourpre
committed