Apply suggestions from code review

Author: OskarStark

html_sanitizer.rst

@@ -913,16 +913,16 @@ the HTML sanitizer: ``src``, ``href``, ``lowsrc``, ``background`` and ``ping``.
                 ->sanitizer('app.post_sanitizer')
                     // if `true`, all URLs using the `http://` scheme will be converted to
                     // use the `https://` scheme instead. `http` still needs to be
-                    // allowed in `allowMediaSchemes`
+                    // allowed in `allowedMediaSchemes`
                     ->forceHttpsUrls(true)
 
                     // specifies the allowed URL schemes. If the URL has a different scheme, the
                     // attribute will be dropped
-                    ->allowMediaSchemes(['http', 'https', 'mailto'])
+                    ->allowedMediaSchemes(['http', 'https', 'mailto'])
 
                     // specifies the allowed hosts, the attribute will be dropped if the URL
                     // contains a different host which is not a subdomain of the allowed host
-                    ->allowMediaHosts(['symfony.com']) // Also allows any subdomain (i.e. www.symfony.com)
+                    ->allowedMediaHosts(['symfony.com']) // Also allows any subdomain (i.e. www.symfony.com)
 
                     // whether to allow relative URLs (i.e. URLs without scheme and host)
                     ->allowRelativeMedias(true)