Update html_sanitizer.rst

Author: OskarStark

html_sanitizer.rst

@@ -793,7 +793,7 @@ URLs of ``<a>`` elements:
                 ->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 `allowLinkSchemes`
+                    // allowed in `allowedLinkSchemes`
                     ->forceHttpsUrls(true)
 
                     // specifies the allowed URL schemes. If the URL has a different scheme, the