Co-authored-by: David Tolnay <[email protected]>

alway -> always

Co-authored-by: David Tolnay <[email protected]>

Add note to documentation of HashSet::intersection

The functionality of the `std::collections::HashSet::intersection(...)` method was slightly surprising to me so I wanted to take a sec to contribute to the documentation for this method.

I've added a `Note:` section if that is appropriate.

…an-DPC

More eslint checks

Here is the list of newly added eslint checks:

 * [no-confusing-arrow](https://eslint.org/docs/rules/no-confusing-arrow)
 * [no-div-regex](https://eslint.org/docs/rules/no-div-regex)
 * [no-floating-decimal](https://eslint.org/docs/rules/no-floating-decimal)
 * [no-implicit-globals](https://eslint.org/docs/rules/no-implicit-globals)
 * [no-implied-eval](https://eslint.org/docs/rules/no-implied-eval)
 * [no-label-var](https://eslint.org/docs/rules/no-label-var)

Since you already reviewed the previous ones:

r? `@Dylan-DPC`

Fix typo in redundant_pattern_match.rs

alway -> always