update Prev/Next Topic link on user_guide/database/index.html
diff --git a/user_guide/database/index.html b/user_guide/database/index.html
index 594de80..1f0a1da 100644
--- a/user_guide/database/index.html
+++ b/user_guide/database/index.html
@@ -86,7 +86,7 @@
 
 <div id="footer">
 <p>
-Previous Topic:&nbsp;&nbsp;<a href="../libraries/config.html">Config Class</a>
+Previous Topic:&nbsp;&nbsp;<a href="../libraries/caching.html">Caching Class</a>
 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;