fix typo

examples/hello-world/step-by-step/higgs/sklearn-kmeans/sklearn_kmeans.ipynb

@@ -311,7 +311,7 @@
     "\n",
     "## Prepare Job  \n",
     "\n",
-    "Now, we have the code, we need to prepare job folder with configurations to run in NVFLARE. o do this, we are going to use Job API to construct a FedJob, which can be used to run simulation and export Job config. \n",
+    "Now, we have the code, we need to prepare job folder with configurations to run in NVFLARE. To do this, we are going to use Job API to construct a FedJob, which can be used to run simulation and export Job config. \n",
     "\n"
    ]
   },