Rollup merge of #74912 - giraffate:fix_broken_link_in_unstable_plugin_book, r=jonas-schievink

Fix broken link in unstable book `plugin`

There is broken link in https://doc.rust-lang.org/unstable-book/language-features/plugin.html#lint-plugins.
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Manish Goregaokar 2020-07-29 16:38:33 -07:00 committed by GitHub
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@ -35,7 +35,7 @@ of a library.
Plugins can extend [Rust's lint
infrastructure](../../reference/attributes/diagnostics.md#lint-check-attributes) with
additional checks for code style, safety, etc. Now let's write a plugin
[`lint_plugin_test.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui-fulldeps/auxiliary/lint_plugin_test.rs)
[`lint-plugin-test.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui-fulldeps/auxiliary/lint-plugin-test.rs)
that warns about any item named `lintme`.
```rust,ignore