Fuzzy matching should be used only for config keys, not sections

[maciejb]

What happens?

Since we are only looking to read conifiguration [tool.jupysql.SqlMagic], it is not appropriate to be evaluating the validity of other sections in pyproject.toml, which may be perfectly valid but intended for other purposes

This implementation is responsible for part of the problem observed in #969

Creating a new issue as per #969 (comment) from @edublancas

To Reproduce

1. Ensure [tool.jupysql.SqlMagic] is not present in either pyproject.toml or ~/.jupysql/config
2. Add [tool.jupysqX.whatever] to one of these files
3. Load the extension in ipython
4. Observe the message:

In [1]: %load_ext sql
UsageError: 'jupysqX' is an invalid section name in [...]/pyproject.toml. Did you mean 'jupysql'?

OS:

Any

JupySQL Version:

0.10.7

Full Name:

Maciej Bukczynski

Affiliation:

Darkhorse Analytics