fix link in README (#636)

README.md

@@ -20,7 +20,7 @@ MCAP libraries are provided in the following languages. For guidance on each lan
 | Python                | [readme](./python)     | [API docs](https://mcap.dev/docs/python)                        | `mcap`       | [![](https://shields.io/pypi/v/mcap)](https://pypi.org/project/mcap/)                |
 | JavaScript/TypeScript | [readme](./typescript) | [API docs](https://mcap.dev/docs/typescript)                    | `@mcap/core` | [![](https://shields.io/npm/v/@mcap/core)](https://www.npmjs.com/package/@mcap/core) |
 | Swift                 | [readme](./swift)      | [API docs](https://mcap.dev/docs/swift/documentation/mcap)      |              | see [releases](https://github.com/foxglove/mcap/releases)                            |
-| Rust                  | [readme](./rust)       | [API docs](https://mcap.dev/docs/rust/doc/mcap)                 | `mcap`       | [![](https://shields.io/crates/v/mcap)](https://crates.io/crates/mcap)               |
+| Rust                  | [readme](./rust)       | [API docs](https://mcap.dev/docs/rust/mcap)                     | `mcap`       | [![](https://shields.io/crates/v/mcap)](https://crates.io/crates/mcap)               |
 
 To run the conformance tests, you will need to use [Git LFS](https://git-lfs.github.com/),
 which is used to store the test logs under `tests/conformance/data`.