Fixed cloudknot demo notebook so boto3 updates don't break it

Author: Chad Curtis

notebooks/cloudknot_parallelization_demo.ipynb

@@ -343,7 +343,7 @@
     "req_string = req.read()\n",
     "req.close()\n",
     "\n",
-    "new_req = req_string[0:req_string.find('\\n')-5]+'5.28'+ req_string[req_string.find('\\n'):]\n",
+    "new_req = req_string[0:req_string.find('=')]+'=1.5.28'+ req_string[req_string.find('\\n'):]\n",
     "req_overwrite = open(op.join(op.split(my_image.docker_path)[0], 'requirements.txt'), 'w')\n",
     "req_overwrite.write(new_req)\n",
     "req_overwrite.close()\n",