Fix minor spelling issue

the examples from the traing set -> the examples from the training set

examples/fine-tuned_qa/olympics-3-train-qa.ipynb

@@ -324,7 +324,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We apply the same process of dataset creation for both the discriminator, and the Q&A answering model. We apply the process separately for the training and testing set, to ensure that the examples from the traing set don't feature within the test set."
+    "We apply the same process of dataset creation for both the discriminator, and the Q&A answering model. We apply the process separately for the training and testing set, to ensure that the examples from the training set don't feature within the test set."
    ]
   },
   {