chore: more hints in model mapping textarea (#205)

* chore: more hints in model mapping textarea

* fix: fix variable not defined

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Co-authored-by: JustSong <songquanpeng@foxmail.com>

web/src/constants/channel.constants.js

@@ -10,4 +10,4 @@ export const CHANNEL_OPTIONS = [
   { key: 9, text: 'AI.LS', value: 9, color: 'yellow' },
   { key: 10, text: 'AI Proxy', value: 10, color: 'purple' },
   { key: 12, text: 'API2GPT', value: 12, color: 'blue' }
-];
+];