Update docs with changes done in 20.3#1822

Merged

yunstanford merged 2 commits intosanic-org:masterfrom Tronic:deprec-docs

Mar 31, 2020

+25-44

Commits on Mar 29, 2020

Remove raw_args from docs (deprecated feature removed in Sanic 20.3).
Tronic
committed
Add missing Sanic(name) arguments in docs. Merge async/non-async class view examples.
Tronic
committed