added docs on mouse up

Author: corevo

packages/selenium-ide/src/neo/models/Command/Commands.js

@@ -439,6 +439,16 @@ export const Commands = [
       target: ArgTypes.locator,
     },
   ],
+  [
+    'mouseUp',
+    {
+      name: 'mouse up',
+      type: TargetTypes.LOCATOR,
+      description: `Simulates the event that occurs when the user releases the 
+        mouse button (e.g., stops holding the button down).`,
+      target: ArgTypes.locator,
+    },
+  ],
   [
     'mouseUpAt',
     {