Spellcheck should ignore capitalization

[jyn514]

Describe the bug

error: spellcheck(Hunspell)
     --> rust/library/std/src/path.rs:2031
      |
 2031 |  Calling `to_string_lossy` on a `Path` with valid unicode:
      |                                                   ^^^^^^^
      | - Unicode, uni code, uni-code, or unicorn
      |
      |   Possible spelling mistake found.

It's technically right, the proper casing is "Unicode", but this seems unnecessarily pedantic.

To Reproduce

Steps to reproduce the behaviour:

1. A file containing unicode
2. Run cargo spellcheck ...
3. ...

cc rust-lang/rust#74697

Expected behavior

Screenshots

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Additional context

[drahnr]

If you think this is ok for your local codebase, I'd expect unicode to be added to a project specific dictionary file. Unicode after all, is the correct term.

[drahnr]

I don't think there is a systematic approach to this, other than allowing extra word's as part of a custom dictionary which is already supported. Generally disabling capitalization / casing entirely.

If you think that doesn't cover it, happy to discuss this further