Revert aliyun registry to registry.cn-hangzhou.aliyuncs.com (#13445)

## Summary
- Revert aliyun registry from
`infiniflow-registry.cn-shanghai.cr.aliyuncs.com` back to
`registry.cn-hangzhou.aliyuncs.com`

## Test plan
- [ ] Verify the docker/.env file contains the correct registry URL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

docker/.env

@@ -158,11 +158,11 @@ RAGFLOW_IMAGE=infiniflow/ragflow:v0.24.0
 
 # If you cannot download the RAGFlow Docker image:
 # RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:v0.24.0
-# RAGFLOW_IMAGE=infiniflow-registry.cn-shanghai.cr.aliyuncs.com/infiniflow/ragflow:v0.24.0
+# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:v0.24.0
 #
 # - For the `nightly` edition, uncomment either of the following:
 # RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:nightly
-# RAGFLOW_IMAGE=infiniflow-registry.cn-shanghai.cr.aliyuncs.com/infiniflow/ragflow:nightly
+# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:nightly
 
 # The embedding service image, model and port.
 # Important: To enable the embedding service, you need to uncomment one of the following two lines:

docker/README.md

@@ -87,7 +87,7 @@ The [.env](./.env) file contains important environment variables for Docker.
 > 
 > - For the `nightly` edition:  
 >   - `RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:nightly` or,
->   - `RAGFLOW_IMAGE=infiniflow-registry.cn-shanghai.cr.aliyuncs.com/infiniflow/ragflow:nightly`.
+>   - `RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:nightly`.
 
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