MNT update notebooks

Author: mvdoc

tutorials/notebooks/movies_3T/04_plot_motion_energy_model.ipynb

@@ -206,7 +206,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "## Plot the model performances\nThe performances are computed using the math:`R^2` scores.\n\n"
+        "## Plot the model performances\nThe performances are computed using the $R^2$ scores.\n\n"
       ]
     },
     {

tutorials/notebooks/movies_3T/06_extract_motion_energy.ipynb

@@ -44,7 +44,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "## Load the stimuli images\n\nHere the data is not loaded in memory, we only take a peak at the data shape.\n\n"
+        "## Load the stimuli images\n\nHere the data is not loaded in memory, we only take a peek at the data shape.\n\n"
       ]
     },
     {

tutorials/notebooks/movies_3T/merged_for_colab.ipynb

@@ -2622,7 +2622,7 @@
    "metadata": {},
    "source": [
     "## Plot the model performances\n",
-    "The performances are computed using the math:`R^2` scores.\n",
+    "The performances are computed using the $R^2$ scores.\n",
     "\n"
    ]
   },