fixes typo auto3dseg/notebooks/data_analyzer.ipynb (#1022)

Author: wyli

auto3dseg/notebooks/data_analyzer.ipynb

@@ -267,7 +267,7 @@
     "If you have downloaded Task05_Prostate from previous step to your data directory `/workspace/data`, you can run the following in the terminal.\n",
     "\n",
     "```bash\n",
-    "python monai.apps.auto3dseg DataAnalyzer get_all_case_stats \\\n",
+    "python -m monai.apps.auto3dseg DataAnalyzer get_all_case_stats \\\n",
     "            --datalist=\"../tasks/msd/Task05_Prostate/msd_task05_prostate_folds.json\" \\\n",
     "            --dataroot=\"/workspace/data/Task05_Prostate\"\n",
     "```\n"