Update kbd shortcut help in tutorial

Author: parente

binder/tutorial.ipynb

@@ -16,15 +16,17 @@
     "\n",
     "```\n",
     "{\n",
-    "    \"quickopen:activate\": {\n",
+    "  \"shortcuts\": [\n",
+    "    {\n",
     "      \"command\": \"quickopen:activate\",\n",
     "      \"keys\": [\n",
-    "        \"Ctrl Accel P\"\n",
+    "        \"Accel Ctrl P\"\n",
     "      ],\n",
     "      \"selector\": \"body\",\n",
     "      \"title\": \"Activate Quick Open\",\n",
     "      \"category\": \"Main Area\"\n",
     "    }\n",
+    "  ]\n",
     "}\n",
     "```\n",
     "\n",
@@ -52,7 +54,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 23,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -80,20 +82,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "['scammers', 'trendy', 'search', 'dismiss', 'nuptial']"
-      ]
-     },
-     "execution_count": 24,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "words[:5]"
    ]
@@ -115,12 +106,12 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.7"
+   "version": "3.7.3"
   },
   "nteract": {
    "version": "0.10.0"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }