diff --git a/docs/source/developers/guides/code/index.rst b/docs/source/developers/guides/code/index.rst
index cfd9d43ad..f98b47657 100644
--- a/docs/source/developers/guides/code/index.rst
+++ b/docs/source/developers/guides/code/index.rst
@@ -4,7 +4,7 @@ Code Development
 .. toctree::
    :maxdepth: 2
 
-   code_standard.rst 
-   builds.rst  
+   code_standard.rst
+   builds.rst
    debug.rst
    tips.rst