Document downstream Fedora package

Author: bgilbert

readme/install.md

@@ -12,6 +12,7 @@
 * [Community Supported Repositories](#community-supported-repositories)
     * [Alpine Linux](#alpine-linux)
     * [Arch Linux](#arch-linux)
+    * [Fedora Linux](#fedora-linux)
     * [FreeBSD](#freebsd)
     * [GNU Guix Package Manager](#gnu-guix-package-manager)
     * [Windows](#windows-1)
@@ -101,6 +102,12 @@ yay -S git-interactive-rebase-tool
 2. Extract to a known location
 3. Run `makepkg -si` from the extracted location
 
+### Fedora Linux
+
+```shell
+dnf install git-interactive-rebase-tool
+```
+
 ### FreeBSD
 
 FreeBSD support is provided by the community, and while attempts are made to ensure everything works on the platform, it is not officially supported. If you run into problems please [create an issue](https://github.com/MitMaro/git-interactive-rebase-tool/issues/new) describing the problem.