[QuickTour] consistent headlines

Author: xabbuh

quick_tour/the_big_picture.rst

@@ -318,7 +318,7 @@ environment.
 
 .. _quick-tour-big-picture-environments-intro:
 
-What Is an environment?
+What is an Environment?
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 An :term:`Environment` represents a group of configurations that's used to run
@@ -378,4 +378,4 @@ are eager to learn more about Symfony2, dive into the next section:
 
 .. _Composer:             https://getcomposer.org/
 .. _executable installer: http://getcomposer.org/download
-.. _Twig:                 http://twig.sensiolabs.org/
+.. _Twig:                 http://twig.sensiolabs.org/

quick_tour/the_controller.rst

@@ -105,7 +105,7 @@ Symfony will transform it into a proper ``500`` error page::
 
     throw new \Exception('Something went wrong!');
 
-Getting information from the Request
+Getting Information from the Request
 ------------------------------------
 
 Symfony automatically injects the ``Request`` object when the controller has an

quick_tour/the_view.rst

@@ -244,8 +244,8 @@ parameters are the values of the variables defined in the route pattern::
     *absolute* URLs, which is very handy when rendering emails and RSS files:
     ``{{ url('_demo_hello', {'name': 'Thomas'}) }}``.
 
-Including Assets: images, JavaScripts, and stylesheets
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Including Assets: Images, JavaScripts and Stylesheets
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 What would the Internet be without images, JavaScripts, and stylesheets?
 Symfony2 provides the ``asset`` function to deal with them easily: