WebHost: Remove space before comma separators in tutorial authors (#5999)

* Remove space before comma

* Factorio authors update

* Simplify template

WebHostLib/templates/tutorialLanding.html

@@ -20,11 +20,7 @@
                 {% for file_name, file_data in tutorial_data.files.items() %}
                     <li>
                         <a href="{{ url_for("tutorial", game=world_name, file=file_name) }}">{{ file_data.language }}</a>
-                        by
-                        {% for author in file_data.authors %}
-                            {{ author }}
-                            {% if not loop.last %}, {% endif %}
-                        {% endfor %}
+                        by {{ file_data.authors | join(", ") }}
                     </li>
                 {% endfor %}
             </ul>

worlds/factorio/__init__.py

@@ -37,7 +37,7 @@ class FactorioWeb(WebWorld):
         "English",
         "setup_en.md",
         "setup/en",
-        ["Berserker, Farrak Kilhn"]
+        ["Berserker", "Farrak Kilhn"]
     )]
     option_groups = option_groups