Fix typo

demonstration.ipynb

@@ -136,24 +136,6 @@
     "                # return(program)\n",
     "                print(program.str())"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "\"<class 'int'>\""
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": []
   }
  ],
  "metadata": {

examples.py

@@ -28,7 +28,7 @@ example_set = {
 
     # advanced string examples
     'concatenate_3': [(["a", "b", "c"], "abc"), (["d", "e", "f"], "def"), (["g", "h", "i"], "ghi")],
-
+    
     # custom user examples
 }