Merge #690

690: Fix Arch Linux repo link in book r=foresterre a=foresterre

Same as #689, but instead for the book instead of the readme.

Co-authored-by: Martijn Gribnau <garm@ilumeo.com>

book/src/getting-started/installation.md

@@ -31,7 +31,7 @@ cargo install cargo-msrv --git https://github.com/foresterre/cargo-msrv.git --br
 
 ### Arch Linux 🔸
 
-cargo-msrv is available from the Arch Linux [community repository](https://archlinux.org/packages/community/x86_64/cargo-msrv/).
+cargo-msrv is available from the Arch Linux [extra repository](https://archlinux.org/packages/extra/x86_64/cargo-msrv/).
 
 **How to install?**
 
@@ -80,4 +80,4 @@ cargo install cargo-msrv --path . # OR cargo build --release && mv ./target/carg
 ```
 
 
-You may find additional installation options in the [README](https://github.com/foresterre/cargo-msrv#install).
+You may find additional installation options in the [README](https://github.com/foresterre/cargo-msrv#install).