Unify the uses of "sourcecode" vs "source code".

Use "source code", which is more grammatically correct.

docs/license.rst

@@ -26,7 +26,7 @@ documentation.
 -   "AUTHORS" hereby refers to all the authors listed in the
     :ref:`authors` section.
 
--   The ":ref:`flask-license`" applies to all the sourcecode shipped as
+-   The ":ref:`flask-license`" applies to all the source code shipped as
     part of Flask (Flask itself as well as the examples and the unittests)
     as well as documentation.
 

docs/patterns/fabric.rst

@@ -32,7 +32,7 @@ hosts.  These hosts can be defined either in the fabfile or on the command
 line.  In this case we will add them to the fabfile.
 
 This is a basic first example that has the ability to upload the current
-sourcecode to the server and install it into a pre-existing
+source code to the server and install it into a pre-existing
 virtual environment::
 
     from fabric.api import *

docs/tutorial/index.rst

@@ -11,7 +11,7 @@ features everything you need to get started.  We will use Flask and SQLite
 as database which comes out of the box with Python, so there is nothing
 else you need.
 
-If you want the full sourcecode in advance or for comparison, check out
+If you want the full source code in advance or for comparison, check out
 the `example source`_.
 
 .. _example source: