added update how to

Updating workflow is not clear for non rust users.
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Radek 2024-08-07 12:01:19 +02:00 committed by GitHub
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@ -47,6 +47,18 @@ cargo install --git https://github.com/rust-lang/mdBook.git mdbook
Again, make sure to add the Cargo bin directory to your `PATH`.
### Updating mdbook from source
```sh
cargo install mdbook
```
This will automatically download mdBook from [crates.io], build it, and re-install it in Cargo's global binary directory (`~/.cargo/bin/` by default).
## Own modifications and contributing
If you are interested in making modifications to mdBook itself, check out the [Contributing Guide] for more information.
[Contributing Guide]: https://github.com/rust-lang/mdBook/blob/master/CONTRIBUTING.md