Remove reference to kebab (#1710)

## Checklist

- [ ] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [ ] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [ ] I have not broken the cheatsheet

Author: pokey

docs/user/README.md

@@ -219,7 +219,7 @@ For example, the command `take every key [blue] air` will select every key in th
 
 ###### `"word"`
 
-If you need to refer to the individual words within a `camelCase`/`kebab-case`/`snake_case` token, you can use the `"word"` modifier. For example,
+If you need to refer to the individual words within a `camelCase`/`snake_case` token, you can use the `"word"` modifier. For example,
 
 - `"second word air"`
 - `"second past fourth word air"`