Fix vanilla brand check

src/de/steamwar/bungeecore/listeners/NonFabricFabricCheck.java

@@ -49,7 +49,7 @@ public class NonFabricFabricCheck extends BasicListener {
         if(!e.getTag().equals("minecraft:brand"))
             return;
 
-        if(!new String(e.getData()).contains("vanilla")){
+        if(!new String(e.getData()).equals("vanilla")){
             return;
         }