Fixes codespell

[erak]

Fixes:

./libevmasm/RuleList.h:51: hist  ==> heist, his
./libevmasm/RuleList.h:51: hist  ==> heist, his
./docs/yul.rst:247: varn  ==> warn
./docs/yul.rst:248: varn  ==> warn
./docs/yul.rst:249: varn  ==> warn
./docs/yul.rst:252: varn  ==> warn
./test/compilationTests/corion/provider.sol:152: datas  ==> data
./test/compilationTests/corion/provider.sol:275: datas  ==> data
./test/compilationTests/corion/provider.sol:326: datas  ==> data

[chriseth]

Maybe use var_n instead?

[erak]

Yeah, then we would need to apply that everywhere like arg1, argn, l1, ..., ln.

[chriseth]

there are only 2 places, right?

[ekpyron]

By the way errorstring and assignend are both in the whitelist, but we only have errorString and assignEnd in the repo - is it possible to make codespell gracefully deal with camelCase? Unrelated to this PR, though. [EDIT: https://github.com/codespell-project/codespell/issues/196 and https://github.com/codespell-project/codespell/issues/314 - doesn't look like it currently]