Update kmeans_mnist_lowlevel.ipynb

Updated MaxRuntimeInHours to MaxRuntimeInSeconds and pushed without PR due to timing.

Author: djarpin

sagemaker-python-sdk/1P_kmeans_lowlevel/kmeans_mnist_lowlevel.ipynb

@@ -242,7 +242,7 @@
     "        \"epochs\": \"3\"\n",
     "    },\n",
     "    \"StoppingCondition\": {\n",
-    "        \"MaxRuntimeInHours\": 1\n",
+    "        \"MaxRuntimeInSeconds\": 60 * 60\n",
     "    },\n",
     "    \"InputDataConfig\": [\n",
     "        {\n",