add note about final project review by instructor

final_project.ipynb

@@ -280,6 +280,17 @@
     "{% endif -%}"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "subslide"
+    }
+   },
+   "source": [
+    "The instructor and {{assisstant_name}} don't have bandwidth to review everyone's full notebooks. Therefore, to be fair to everyone, we will deny any requests to have notebooks reviewed end to end, aside from the appeals mentioned below. In other words, please don't ask us \"I think I'm done — can you make sure it's ok?\" That said, we are more than happy to answer specific questions and help troubleshoot specific sections."
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {