DS3: Remove the outdated French translation of the setup docs (#4700)

This was causing confusion and Discord support requests because the
instructions there are no longer compatible with the latest version of
Archipelago.

This also lists me as the primary author of the new setup guide.

worlds/dark_souls_3/__init__.py

@@ -25,19 +25,10 @@ class DarkSouls3Web(WebWorld):
         "English",
         "setup_en.md",
         "setup/en",
-        ["Marech"]
+        ["Natalie", "Marech"]
     )
 
-    setup_fr = Tutorial(
-        setup_en.tutorial_name,
-        setup_en.description,
-        "Français",
-        "setup_fr.md",
-        "setup/fr",
-        ["Marech"]
-    )
-
-    tutorials = [setup_en, setup_fr]
+    tutorials = [setup_en]
     option_groups = option_groups
     item_descriptions = item_descriptions
     rich_text_options_doc = True