Update 20-inject.html

Scroll the div down automatically when the user changes the repeat drop down.

packages/node_modules/@node-red/nodes/core/common/20-inject.html

@@ -278,7 +278,9 @@
                     $("#node-input-once").prop('checked', false);
                 }
                 
-                // Fire oneditresize?
+                // Scroll down
+                var scrollDiv = $("#dialog-form").parent();
+                scrollDiv.scrollTop(scrollDiv.prop('scrollHeight'));
             });
 
             $("#node-input-once").on("change", function() {