Update install-instructions.md

Author: Madis0

install-instructions.md

@@ -123,11 +123,13 @@ You need [Java 21](https://download.fo/java21) to play the game.
   3. On your menubar, press Apple logo, then `System Settings`, then click `Privacy & Security` in the sidebar
   4. Scroll down on the right view, you should see the button `Open anyway`
   5. Enter your password or fingerprint. The installer should open.
+  6. Future launches of the same installer version open the installer directly on double-click.
 
   #### macOS Sonoma 14 and older
   1. Open the downloaded .dmg file
   2. **Right click** the "Fabulously Optimized Installer" and click `Open`
   3. Click `Open` again when asked in a prompt. The installer should open.
+  4. Future launches of the same installer version open the installer directly on double-click.
 
   #### Why is this necessary?
   Apple requires 99$ a year to get a program "verified". This is not feasible for this modpack.