Use title case for consistency

docs/sources/contributing/devenvironment.rst

@@ -1,8 +1,8 @@
-:title: Setting up a dev environment
+:title: Setting Up a Dev Environment
 :description: Guides on how to contribute to docker
 :keywords: Docker, documentation, developers, contributing, dev environment
 
-Setting up a dev environment
+Setting Up a Dev Environment
 ============================
 
 Instructions that have been verified to work on Ubuntu 12.10,

docs/sources/examples/running_examples.rst

@@ -4,7 +4,7 @@
 
 .. _running_examples:
 
-Running The Examples
+Running the Examples
 --------------------
 
 All the examples assume your machine is running the docker daemon. To run the docker daemon in the background, simply type:

docs/sources/use/basics.rst

@@ -3,8 +3,8 @@
 :keywords: Examples, Usage, basic commands, docker, documentation, examples
 
 
-The basics
-=============
+The Basics
+==========
 
 Starting Docker
 ---------------

docs/sources/use/workingwithrepository.rst

@@ -4,8 +4,8 @@
 
 .. _working_with_the_repository:
 
-Working with the repository
-============================
+Working with the Repository
+===========================
 
 
 Top-level repositories and user repositories