fix category initialization in tag alias/implication requests

app/logical/tag_alias_request.rb

@@ -29,7 +29,7 @@ class TagAliasRequest
       :original_post_attributes => {
         :body => "create alias [[#{antecedent_name}]] -> [[#{consequent_name}]]\n\n\"Link to alias\":/tag_aliases?search[id]=#{tag_alias.id}\n\n#{reason}"
       },
-      :category => 1
+      :category_id => 1
     )
     if @forum_topic.errors.any?
       raise ValidationError.new(@forum_topic.errors.full_messages.join("; "))

app/logical/tag_implication_request.rb

@@ -29,7 +29,7 @@ class TagImplicationRequest
       :original_post_attributes => {
         :body => "create implication [[#{antecedent_name}]] -> [[#{consequent_name}]]\n\n\"Link to implication\":/tag_implications?search[id]=#{tag_implication.id}\n\n#{reason}"
       },
-      :category => 1
+      :category_id => 1
     )
     if @forum_topic.errors.any?
       raise ValidationError.new(@forum_topic.errors.full_messages.join("; "))