docs: update installation.md

MichaelCurrin · MichaelCurrin · commit 2fd440527a67 · 2022-01-02T15:49:32.000+02:00
diff --git a/docs/development/installation.md b/docs/development/installation.md
@@ -26,3 +26,15 @@ $ cd auto-commit-msg
 ```sh
 $ make install
 ```
+
+## Upgrade project dependencies
+
+For project maintainers.
+
+```sh
+$ make outdated
+```
+
+```sh
+$ make upgrade
+```
