edition-tag.html.twig: New line before package

In the tooltip, the new line was often after the slash (between vendor and package). Now, it's just before the package ref, before the vendor.

https://www.w3.org/TR/2011/WD-html5-20110525/elements.html#the-title-attribute

https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/title#multiline_titles

Author: adriendupuis

tools/php_api_ref/.phpdoc/template/components/edition-tag.html.twig

@@ -32,6 +32,6 @@
             {% endfor %}
         {% endif %}
     {% elseif package_edition_map[package] == 'optional' %}
-        <div class="pill optional-pill" title="Included in the optional package {{ package }}"></div>
+        <div class="pill optional-pill" title="Included in the optional package&#x000A;{{ package }}"></div>
     {% endif %}
 {% endblock %}