clippy: use replace with arg-list

[darnuria]

Rationale:

warning: used consecutive `str::replace` call
   --> src/resources.rs:499:10
    |
499 |     name.replace(' ', "_").replace('.', "_").to_lowercase()
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `replace([' ', '.'], "_")`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_str_replace
    = note: `#[warn(clippy::collapsible_str_replace)]` on by default

[darnuria]

(just seen the bevy rewrite no problem to close ;))

[darnuria]

Thanks for review and the game. :)