This PR adds two missing packages needed by make serve command in step 7
$ make serve
poetry run mkdocs serve
ERROR - Config value 'theme': Unrecognised theme name: 'material'. The available installed themes are: mkdocs, readthedocs
ERROR - Config value 'plugins': The "mermaid2" plugin is not installed
Aborted with 2 Configuration Errors!
make: *** [Makefile:137: mkd-serve] Error 1
This PR adds two missing packages needed by
make serve
command in step 7