export tutorials changed in c161138 (#498)

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

tutorials/tutorial8/tutorial.ipynb

@@ -42,7 +42,7 @@
     "\n",
     "    IN_COLAB = True\n",
     "except:\n",
-    "    IN_COLAB = False \n",
+    "    IN_COLAB = False\n",
     "if IN_COLAB:\n",
     "    !pip install \"pina-mathlab\"\n",
     "\n",

tutorials/tutorial8/tutorial.py

@@ -12,7 +12,7 @@
 # Let's start with the necessary imports.
 # It's important to note the minimum PINA version to run this tutorial is the `0.1`.
 
-# In[82]:
+# In[ ]:
 
 
 ## routine needed to run the notebook on Google Colab