Fix typo

setions instead of sections

supervised-airfoils.ipynb

@@ -202,7 +202,7 @@
    "source": [
     "Next, let's define a small helper class `DfpDataset` to organize inputs and targets. We'll transfer the corresponding data to the pytorch `DataLoader` class. \n",
     "\n",
-    "We also set up some globals to control training parameters, maybe most importantly: the learning rate `LR`, i.e. $\\eta$ from the previous setions. When your training run doesn't converge this is the first parameter to experiment with.\n",
+    "We also set up some globals to control training parameters, maybe most importantly: the learning rate `LR`, i.e. $\\eta$ from the previous sections. When your training run doesn't converge this is the first parameter to experiment with.\n",
     "\n",
     "Here, we'll keep it relatively small throughout. (Using _learning rate decay_ would be better, i.e. potentially give an improved convergence, but is omitted here for clarity.) "
    ]
@@ -801,4 +801,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 0
-}
+}