Update json_encode.rst

diff --git a/doc/filters/json_encode.rst b/doc/filters/json_encode.rst
index 9821b11..a39bb47 100644 (file)
--- a/doc/filters/json_encode.rst
+++ b/doc/filters/json_encode.rst
@@ -1,7 +1,7 @@
 ``json_encode``
 ===============
 
-The ``json_encode`` filter returns the JSON representation of a string:
+The ``json_encode`` filter returns the JSON representation of a value:
 
 .. code-block:: jinja