update check keywords

app/controllers/accounts_controller.rb

@@ -361,7 +361,7 @@ class AccountsController < ApplicationController
   end
 
   def check_keywords
-    text = params[:text]&.gsub(/\s+/, "")
+    text = params[:text].to_s.each_char.select { |c| c.bytes.first < 240 }.join('')
     tip_exception("无法使用以下关键词：#{text}，请重新命名") if ReversedKeyword.check_exists?(text)
     render_ok
   end