docs: fix Kitex multi-service doc (#1011)

cloudwego · Mar 7, 2024 · ca6ceb1 · ca6ceb1
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commit ca6ceb1
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diff --git a/content/en/docs/kitex/Tutorials/advanced-feature/multi_service.md b/content/en/docs/kitex/Tutorials/advanced-feature/multi_service.md
@@ -139,6 +139,7 @@ When `server.WithRefuseTrafficWithoutServiceName` option is enabled, an error wi
 if the server receives requests in the following cases:
 - Client uses the older Kitex version (< v0.9.0), which does not support multi-service feature 
 - The transport protocol of a request is not TTHeader (Kitex pb's transport protocol enables TTHeader by default)
+- Client option `client.WithMetaHandler(transmeta.ClientTTHeaderHandler())` is not set
 
 ## FAQ
 ### 1. What's the difference between Multi-Service and Combine Service?