Merge branch '6.0' into 6.1

* 6.0:
  Readded the link to Akamai
  Remove akamai broken link

Author: javiereguiluz

web_link.rst

@@ -187,6 +187,6 @@ You can also add links to the HTTP response directly from controllers and servic
 .. _`the Preload specification`: https://www.w3.org/TR/preload/#server-push-http-2
 .. _`Cloudflare`: https://blog.cloudflare.com/announcing-support-for-http-2-server-push-2/
 .. _`Fastly`: https://docs.fastly.com/en/guides/http2-server-push
-.. _`Akamai`: https://blogs.akamai.com/2017/03/http2-server-push-the-what-how-and-why.html
+.. _`Akamai`: https://http2.akamai.com/
 .. _`link defined in the HTML specification`: https://html.spec.whatwg.org/dev/links.html#linkTypes
 .. _`PSR-13`: https://www.php-fig.org/psr/psr-13/