Remove 'build environment' from guides
There are guides that are about customizing other aspects as well.
@@ -28,7 +28,7 @@ whether that is Sphinx or MkDocs.
Read the Docs how-to guides
---------------------------
-These guides will help you customize or tune aspects of the Read the Docs build environment.
+These guides will help you customize or tune aspects of the Read the Docs.
.. toctree::
:maxdepth: 1
