update doc with max-age

trollepierre · javiereguiluz · commit d12df22b3c8c · 2021-04-19T20:12:15.000+02:00
diff --git a/http_cache/expiration.rst b/http_cache/expiration.rst
@@ -34,7 +34,7 @@ additional directives):
 
 .. code-block:: text
 
-    Cache-Control: public, maxage=600
+    Cache-Control: public, max-age=600
 
 .. note::
 
