[Sample] Update doc in taxi pipeline demo

samples/core/parameterized_tfx_oss/taxi_pipeline_notebook.ipynb

@@ -17,7 +17,7 @@
     "## Permission\n",
     "\n",
     "This pipeline requires Google Cloud Storage permission to run. \n",
-    "If KFP was deployed through K8S marketplace, please make sure full-scope access is checked when creating the cluster.\n",
+    "If KFP was deployed through K8S marketplace, please make sure **\"Allow access to the following Cloud APIs\"** is checked when creating the cluster. <img src=\"check_permission.png\">\n",
     "Otherwise, follow instructions in [the guideline](https://github.com/kubeflow/pipelines/blob/master/manifests/gcp_marketplace/guide.md#gcp-service-account-credentials) to guarantee at least, that the service account has `storage.admin` role."
    ]
   },
@@ -32,6 +32,38 @@
     "!python3 -m pip install tfx==0.21.0 --quiet --user"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "source": [
+    "Note: if you're warned by \n",
+    "```\n",
+    "WARNING: The script {LIBRARY_NAME} is installed in '/home/jupyter/.local/bin' which is not on PATH.\n",
+    "```\n",
+    "You might need to fix by running the next cell and restart the kernel."
+   ],
+   "metadata": {
+    "collapsed": false,
+    "pycharm": {
+     "name": "#%% md\n"
+    }
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "outputs": [],
+   "source": [
+    "# Set `PATH` to include user python binary directory and a directory containing `skaffold`.\n",
+    "PATH=%env PATH\n",
+    "%env PATH={PATH}:/home/jupyter/.local/bin"
+   ],
+   "metadata": {
+    "collapsed": false,
+    "pycharm": {
+     "name": "#%%\n"
+    }
+   }
+  },
   {
    "cell_type": "markdown",
    "metadata": {},