Currently pydoc (and therefore things like the interactive help prompt) do not have documentation for the soft-keywords "match" and "case".

```
help> match
No Python documentation found for 'match'.
Use help() to get the interactive help utility.
Use help(str) for help on the str class.
```

I think that it would make sense for both of these prompts to give the docs for the match statement (https://docs.python.org/3/reference/compound_stmts.html#the-match-statement) similar to the other compound statements.

The "compound" doc already contains the match statement documentation, but is unnecessarily long at over 48000 characters, and is only accessed by the unhelpful named for this purpose "LOOPING" prompt. As soft keywords, they also might be best added in a separate section in "keywords" (and potentially with "_", although this already refers to "PRIVATENAMES" and is in "symbols").

A standalone match and case doc is not currently present in the Lib/pydoc_data/topics.py file automatically generated from documentation, and would need to be added in some way to do this.