Auto merge of #9817 - mgrachev:patch-1, r=Manishearth

Update lint example for `collapsible_str_replace`

To fix this warning:
```
warning: the borrowed expression implements the required traits
  --> src/fixes/quote_character.rs:16:43
   |
16 |         let hello = "hesuo worpd".replace(&['s', 'u', 'p'], "l");
   |                                           ^^^^^^^^^^^^^^^^ help: change this to: `['s', 'u', 'p']`
   |
   = note: `#[warn(clippy::needless_borrow)]` on by default
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
```

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