fixes versionadded directive. refs #12598

Author: OskarStark

.doctor-rst.yaml

@@ -80,3 +80,4 @@ whitelist:
         - '$var .= "Because of this `\xE9` octet (\\xE9),\n";'
         - "`Deploying Symfony 4 Apps on Heroku`_."
         - ".. _`Deploying Symfony 4 Apps on Heroku`: https://devcenter.heroku.com/articles/deploying-symfony4"
+        - '.. versionadded:: 0.2' # MercureBundle

mercure.rst

@@ -568,12 +568,15 @@ sent. Here is the PublisherStub implementation::
     App\Tests\Functional\Fixtures\PublisherStub:
         decorates: mercure.hub.default.publisher
 
-.. versionadded:: 0.2
 
 Debugging
 ---------
 
-The WebProfiler panel was introduced in MercureBundle 0.2. Enable it on your configuration, as following:
+.. versionadded:: 0.2
+
+    The WebProfiler panel was introduced in MercureBundle 0.2.
+
+Enable the panel in your configuration, as follows:
 
 .. configuration-block::