[ci skip] Some more generic user guide cleanup
diff --git a/user_guide_src/source/libraries/user_agent.rst b/user_guide_src/source/libraries/user_agent.rst
index 3662cf3..9f96768 100644
--- a/user_guide_src/source/libraries/user_agent.rst
+++ b/user_guide_src/source/libraries/user_agent.rst
@@ -8,11 +8,11 @@
 supported character-set information.
 
 .. contents::
-	:local:
+  :local:
 
 .. raw:: html
 
-	<div class="custom-index container"></div>
+  <div class="custom-index container"></div>
 
 **************************
 Using the User Agent Class