Use constant name in doc (fixes #544)
diff --git a/jinja2/environment.py b/jinja2/environment.py
index 9c6e4d4..8b37ef8 100644
--- a/jinja2/environment.py
+++ b/jinja2/environment.py
@@ -179,7 +179,7 @@
`None` implicitly into an empty string here.
`autoescape`
- If set to true the XML/HTML autoescaping feature is enabled by
+ If set to `True` the XML/HTML autoescaping feature is enabled by
default. For more details about autoescaping see
:class:`~jinja2.utils.Markup`. As of Jinja 2.4 this can also
be a callable that is passed the template name and has to