Update modrinth_mac.md

Author: Axuras

docs/launcher/modrinth_mac.md

@@ -10,7 +10,7 @@ This guide will explain the install process for Modrinth, as well as how we can
 
 ### Step 1 - Installing Modrinth
 
-[Download Modrinth App](https://modrinth.com/app). It should automatically recommend the correct version to download (a `.dmg`). Once it is finished downloading, run it. It may warn you that it is an executable file and could be malicious. If so, Go to System Settings > Privacy & Security > Security, and click "Open Anyway".
+[Download Modrinth App](https://modrinth.com/app). It should automatically recommend the correct version to download (a `.dmg`). Once it is finished downloading, run it. It may warn you that it is an executable file and could be malicious. If so, Go to System Settings > Privacy & Security > Security, and click "Open Anyway". And drag the item named "Modrinth App" into the folder titled "Applications".
 
 ### Step 2 - Logging in