More typo fixes.

docs/tutorial/css.rst

@@ -14,7 +14,7 @@ folder we created before:
     h1, h2          { font-family: 'Georgia', serif; margin: 0; }
     h1              { border-bottom: 2px solid #eee; }
     h2              { font-size: 1.2em; }
-    
+
     .page           { margin: 2em auto; width: 35em; border: 5px solid #ccc;
                       padding: 0.8em; background: white; }
     .entries        { list-style: none; margin: 0; padding: 0; }

docs/tutorial/dbinit.rst

@@ -31,7 +31,7 @@ first (`__future__` imports must be the very first import)::
 Next we can create a function called `init_db` that initializes the
 database.  For this we can use the `connect_db` function we defined
 earlier.  Just add that function below the `connect_db` function::
-    
+
     def init_db():
         with closing(connect_db()) as db:
             with app.open_resource('schema.sql') as f:

docs/tutorial/testing.rst

@@ -1,7 +1,7 @@
 .. _tutorial-testing:
 
 Bonus: Testing the Application
-===============================
+==============================
 
 Now that you have finished the application and everything works as
 expected, it's probably not a good idea to add automated tests to simplify