Fix some visible whitespace issues

Author: odinho

README.md

@@ -1,4 +1,4 @@
-# Django Girls Tutorial 
+# Django Girls Tutorial
 [![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/DjangoGirls/tutorial?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 > This work is licensed under the Creative Commons Attribution-ShareAlike 4.0

en/django_orm/README.md

@@ -66,7 +66,7 @@ As you can see, we now `get` a `User` with a `username` that equals to 'ola'. Ne
 
 Now we can finally create our first post:
 
-    >>> Post.objects.create(author = me, title = 'Sample title', text = 'Test')
+    >>> Post.objects.create(author=me, title='Sample title', text='Test')
 
 Hurray! Wanna check if it worked?
 

en/python_introduction/README.md

@@ -406,7 +406,7 @@ So far we've been writing all our python code in the intepreter, which limits us
 
 To exit from the Python interpreter that we've been using, simply type the ```exit()``` function:
 
-    >>>exit()
+    >>> exit()
     $
 
 This will put you back into the command prompt.

es/python_introduction/README.md

@@ -438,7 +438,7 @@ Hasta ahora hemos estado escribiendo nuestro código de python en el intérprete
 
 Para salir del interprete de Python que hemos estado usando, simplemente escribe la función de ~~~ exit() ~~~:
 
-    >>>exit()
+    >>> exit()
     $
 
 

fr/python_introduction/README.md

@@ -438,7 +438,7 @@ Pour l'instant, on a écrit tout notre code python directement dans l'interprét
 
 Pour quitter l'interpréteur Python que nous sommes en train d'utiliser, il suffit de taper la fonction ~ ~ ~ exit() ~ ~ ~ :
 
-    >>>exit()
+    >>> exit()
     $
 
 
@@ -730,4 +730,4 @@ Allez donc vous chercher un cupcake avant de passer au chapitre suivant :)
 
 ![Cupcake][3]
 
- [3]: images/cupcake.png
+ [3]: images/cupcake.png

uk/python_introduction/README.md

@@ -438,7 +438,7 @@
 
 Щоб вийти з Python інтерпретатора, яким ми користувалися до цього, просто наберіть функцію ~~~ exit()~~~:
 
-    >>>exit()
+    >>> exit()
     $