Fix JetBrains annotation in module info not being runtime optional (static) (#67)

Author: Jonathing

src/main/java/module-info.java

@@ -11,10 +11,11 @@
     requires cpw.mods.modlauncher;
     requires net.minecraftforge.forgespi;
     requires org.apache.logging.log4j;
-    requires org.jetbrains.annotations;
     requires org.openjdk.nashorn;
     requires org.objectweb.asm.util;
 
+    requires static org.jetbrains.annotations;
+
     provides net.minecraftforge.forgespi.coremod.ICoreModProvider
         with net.minecraftforge.coremod.CoreModProvider;
 }