docs: Fix broken link in reinstall docs

Signed-off-by: ckyrouac <[email protected]>

Author: ckyrouac

docs/src/bootc-install.md

@@ -233,7 +233,7 @@ to the above.
 
 ### Using `system-reinstall-bootc`
 
-This is a separate binary included with bootc. It is an opinionated, interactive CLI that wraps `bootc install to-existing-root`. See [bootc install to-existing-root](Using-bootc-install-to-existing-root) for details on the installation operation.
+This is a separate binary included with bootc. It is an opinionated, interactive CLI that wraps `bootc install to-existing-root`. See [bootc install to-existing-root](#Using-bootc-install-to-existing-root) for details on the installation operation.
 
 `system-reinstall-bootc` can be run from an existing Linux system. It will pull the supplied image, prompt to setup SSH keys for accessing the system, and run `bootc install to-existing-root` with all the bind mounts and SSH keys configured.