diff --git a/demo_docs/source/index.rst b/demo_docs/source/index.rst
index e1cf1fdb..4d5823a9 100644
--- a/demo_docs/source/index.rst
+++ b/demo_docs/source/index.rst
@@ -14,6 +14,7 @@ Contents:
 
 .. toctree::
     :maxdepth: 2
+    :caption: Sweet Docs
 
     demo
     list
@@ -220,4 +221,4 @@ Here I am making a citation [1]_
 Download links
 ==============
 
-:download:`This long long long long long long long long long long long long long long long download link should be blue with icon, and should wrap white-spaces <static/yi_jing_01_chien.jpg>`
\ No newline at end of file
+:download:`This long long long long long long long long long long long long long long long download link should be blue with icon, and should wrap white-spaces <static/yi_jing_01_chien.jpg>`