Merge pull request #345 from doctrine/xabbuh-patch-2

fix documentation build errors

Author: goetas

Resources/doc/index.rst

@@ -97,6 +97,7 @@ application:
 
 - The ``services`` node allows you to provide custom services to the underlying ``DependencyFactory`` part of ``doctrine/migrations``.
 - The node ``factories`` is similar to ``services``, with the difference that it accepts only callables.
+
 The provided callable must return the service to be passed to the ``DependencyFactory``.
 The callable will receive as first argument the ``DependencyFactory`` itself,
 allowing you to fetch other dependencies from the factory while instantiating your custom dependencies.