Update 6_2_Gradient_Descent.ipynb

Notebooks/Chap06/6_2_Gradient_Descent.ipynb

@@ -300,7 +300,7 @@
     {
       "cell_type": "markdown",
       "source": [
-        "Now we are ready to perform gradient descent.  We'll need to use our line search routine from noteboo 6.1, which I've reproduced here plus the helper function loss_function_1D that converts from a 2D problem to a 1D problem"
+        "Now we are ready to perform gradient descent.  We'll need to use our line search routine from notebook 6.1, which I've reproduced here plus the helper function loss_function_1D that maps the search along the negative gradient direction in 2D space to a 1D problem (distance along this direction)"
       ],
       "metadata": {
         "id": "5EIjMM9Fw2eT"