Update task_results.ipynb (#715)

Fixing spelling mistake

docs/tutorial/task_results.ipynb

@@ -46,7 +46,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Nothing new so far, we have hardcoded an error thoigh in the `say` task, this will help us illustrate some concepts. Now let's create a variant of the grouped task we saw in an earlier tutorial:"
+    "Nothing new so far, we have hardcoded an error though in the `say` task, this will help us illustrate some concepts. Now let's create a variant of the grouped task we saw in an earlier tutorial:"
    ]
   },
   {