docs: Sphinxify LLVMBuild documentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168348 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/development_process.rst b/docs/development_process.rst
index 4fc20b3..74324b9 100644
--- a/docs/development_process.rst
+++ b/docs/development_process.rst
@@ -8,6 +8,7 @@
 
    MakefileGuide
    Projects
+   LLVMBuild
 
 * :ref:`projects`
 
@@ -16,7 +17,7 @@
   tree) allow the project code to be located outside (or inside) the ``llvm/``
   tree, while using LLVM header files and libraries.
 
-* `LLVMBuild Documentation <LLVMBuild.html>`_
+* :doc:`LLVMBuild`
 
   Describes the LLVMBuild organization and files used by LLVM to specify
   component descriptions.