Wrap text.

docs/api.rst

@@ -92,7 +92,8 @@ Incoming Request Data
    .. attribute:: base_url
    .. attribute:: url_root
 
-      Provides different ways to look at the current `IRI<http://tools.ietf.org/html/rfc3987>`_.  Imagine your
+      Provides different ways to look at the current
+      `IRI<http://tools.ietf.org/html/rfc3987>`_.  Imagine your
       application is listening on the following application root::
 
           http://www.example.com/myapplication