[Ruby] Fix sets/related tags exception

app/logical/bulk_related_tag_query.rb

@@ -20,7 +20,7 @@ class BulkRelatedTagQuery
     end
   end
 
-  def serializable_hash(**options)
+  def serializable_hash(*)
     tags
   end
 

app/logical/related_tag_query.rb

@@ -37,7 +37,7 @@ class RelatedTagQuery
     tags_with_categories(tags)
   end
 
-  def serializable_hash(options)
+  def serializable_hash(*)
     {
       query: query,
       category: category,

app/logical/tags_preview.rb

@@ -36,7 +36,7 @@ class TagsPreview
     end
   end
 
-  def serializable_hash(**options)
+  def serializable_hash(*)
     @tags
   end
 end

app/views/post_sets/_secondary_links.html.erb

@@ -10,7 +10,7 @@
     <% if @post_set && @post_set.id %>
       <li>|</li>
       <%= subnav_link_to "Posts", posts_path(tags: "set:#{@post_set.shortname}") %>
-      <%= subnav_link_to "Maintainers", action: "maintainers", id: params[:id] %>
+      <%= subnav_link_to "Maintainers", maintainers_post_set_path(@post_set) %>
 
       <% if @post_set.is_owner?(CurrentUser.user) || CurrentUser.is_admin? %>
         <%= subnav_link_to "Edit", edit_post_set_path(@post_set) %>