use jupyterlabdemo as Firefly server with https

Author: stargaser

tutorial-firefly.ipynb

@@ -246,7 +246,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Choose a Firefly server. We use the Firefly server that is running at NCSA."
+    "Choose a Firefly server. We use the Firefly server that is running in the jupyterlabdemo environment."
    ]
   },
   {
@@ -255,7 +255,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "my_server = 'lsst-demo.ncsa.illinois.edu'"
+    "my_server = 'https://jupyterlabdemo.lsst.codes'"
    ]
   },
   {
@@ -267,7 +267,7 @@
     "import IPython.display\n",
     "IPython.display.display(\n",
     "     IPython.display.Markdown(\n",
-    "         'Open a browser window to http://{}/firefly/slate.html?__wsch={}'.format(my_server, my_channel)))"
+    "         'Open a browser window to {}/firefly/slate.html?__wsch={}'.format(my_server, my_channel)))"
    ]
   },
   {