export tutorials changed in c161138 (#498)

Co-authored-by: dario-coscia <dario-coscia@users.noreply.github.com>

tutorials/tutorial1/tutorial.ipynb

@@ -89,7 +89,7 @@
     "try:\n",
     "    import google.colab\n",
     "\n",
-    "    IN_COLAB = True \n",
+    "    IN_COLAB = True\n",
     "except:\n",
     "    IN_COLAB = False\n",
     "if IN_COLAB:\n",

tutorials/tutorial1/tutorial.py

@@ -53,7 +53,7 @@
 # What if our equation is also time-dependent? In this case, our `class` will inherit from both `SpatialProblem` and `TimeDependentProblem`:
 #
 
-# In[1]:
+# In[ ]:
 
 
 ## routine needed to run the notebook on Google Colab