Added the missing versionadded directives

Author: javiereguiluz

components/http_foundation.rst

@@ -503,6 +503,11 @@ call::
         'etag'             => 'abcdef'
     ]);
 
+.. versionadded:: 5.1
+
+    The ``must_revalidate``, ``no_cache``, ``no_store``, ``no_transform`` and
+    ``proxy_revalidate`` directives were introduced in Symfony 5.1.
+
 To check if the Response validators (``ETag``, ``Last-Modified``) match a
 conditional value specified in the client Request, use the
 :method:`Symfony\\Component\\HttpFoundation\\Response::isNotModified`

http_cache.rst

@@ -342,7 +342,8 @@ the most useful ones::
 Additionally, most cache-related HTTP headers can be set via the single
 :method:`Symfony\\Component\\HttpFoundation\\Response::setCache` method::
 
-    // sets cache settings in one call
+    // use this method to set several cache settings in one call
+    // (this example lists all the available cache settings)
     $response->setCache([
         'must_revalidate'  => false,
         'no_cache'         => false,
@@ -358,6 +359,11 @@ Additionally, most cache-related HTTP headers can be set via the single
         'etag'             => 'abcdef'
     ]);
 
+.. versionadded:: 5.1
+
+    The ``must_revalidate``, ``no_cache``, ``no_store``, ``no_transform`` and
+    ``proxy_revalidate`` directives were introduced in Symfony 5.1.
+
 Cache Invalidation
 ------------------