Merge branch '6.4' into 7.2

* 6.4:
  Update framework.rst

Author: javiereguiluz

reference/configuration/framework.rst

@@ -1239,7 +1239,7 @@ http_cache
 allow_reload
 ............
 
-**type**: ``string``
+**type**: ``boolean`` **default**: ``false``
 
 Specifies whether the client can force a cache reload by including a
 Cache-Control "no-cache" directive in the request. Set it to ``true``
@@ -1248,7 +1248,7 @@ for compliance with RFC 2616. (default: false)
 allow_revalidate
 ................
 
-**type**: ``string``
+**type**: ``boolean`` **default**: ``false``
 
 Specifies whether the client can force a cache revalidate by including a
 Cache-Control "max-age=0" directive in the request. Set it to ``true``