modules: Use lowercase for native symbols

Author: hexaredecimal

src/main/java/org/piccode/rt/modules/PiccodeProcModule.java

@@ -20,7 +20,7 @@
 public class PiccodeProcModule {
 	public static void addFunctions() {
 
-		NativeFunctionFactory.create("forEach", List.of("array", "func"), (args, namedArgs, frame) -> {
+		NativeFunctionFactory.create("foreach", List.of("array", "func"), (args, namedArgs, frame) -> {
 				var ctx = frame == null ? 
 						Context.top
 						: Context.getContextAt(frame);