Merge pull request #32 from TacoGS/NOISSUE/java-update-v21-wording

NOISSUE: Update Java 21 to indicate using .MSI

Author: TacoGS

Using-the-right-Java.md

@@ -5,6 +5,8 @@ If you don't know which one and how to get it, read on. After you installed the
 
 ### **Minecraft 1.20.5 and newer (Java 21)**
 
+**Make sure to download the .msi installer!**
+
 Eclipse Temurin: <https://adoptium.net/temurin/releases/?os=windows&arch=x64&package=jre&version=21>
 
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