fixed doc

diff --git a/doc/filters/index.rst b/doc/filters/index.rst
index 48dfbf6..599f2cf 100644 (file)
--- a/doc/filters/index.rst
+++ b/doc/filters/index.rst
@@ -9,6 +9,7 @@ Filters
     replace
     url_encode
     json_encode
+    convert_encoding
     title
     capitalize
     upper