1d2bd0e379
Change tabs to spacs in macro_rules snippet This PR changes the `macro_rules!` snippet to use spaces instead of tabs. The other snippets like [this one][test-snippet] already use spaces. The snippet was introduced in 5575588 where no reason is provided to use tabs. [test-snippet]: https://github.com/rust-lang/rust-analyzer/blob/master/crates/ide_completion/src/completions/snippet.rs#L70=