Docs: Update version references to v0.26.1 in READMEs and docs (#16158)

### What problem does this PR solve?

- Update version tags in README files (including translations) from
v0.26.0 to v0.26.1
- Modify Docker image references and documentation to reflect new
version
- Update version badges and image descriptions
- Maintain consistency across all language variants of README files

### Type of change

- [x] Documentation Update

docker/.env

@@ -162,11 +162,11 @@ GO_ADMIN_PORT=9383
 API_PROXY_SCHEME=python # use pure python server deployment
 
 # The RAGFlow Docker image to download. v0.22+ doesn't include embedding models.
-RAGFLOW_IMAGE=infiniflow/ragflow:v0.26.0
+RAGFLOW_IMAGE=infiniflow/ragflow:v0.26.1
 
 # If you cannot download the RAGFlow Docker image:
-# RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:v0.26.0
-# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:v0.26.0
+# RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:v0.26.1
+# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:v0.26.1
 #
 # - For the `nightly` edition, uncomment either of the following:
 # RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:nightly

docker/README.md

@@ -79,7 +79,7 @@ The [.env](./.env) file contains important environment variables for Docker.
 - `SVR_HTTP_PORT`  
   The port used to expose RAGFlow's HTTP API service to the host machine, allowing **external** access to the service running inside the Docker container. Defaults to `9380`.
 - `RAGFLOW_IMAGE`  
-  The Docker image edition. Defaults to `infiniflow/ragflow:v0.26.0`. The RAGFlow Docker image does not include embedding models.
+  The Docker image edition. Defaults to `infiniflow/ragflow:v0.26.1`. The RAGFlow Docker image does not include embedding models.
 
   
 > [!TIP]  

docker/entrypoint.sh

@@ -278,7 +278,7 @@ if [[ "${INIT_MODEL_PROVIDER_TABLES}" -eq 1 ]]; then
         --stages tenant_model_provider,tenant_model_instance,tenant_model,model_id_config \
         --config conf/service_conf.yaml \
         --execute \
-        --database-version "v0.26.0" \
+        --database-version "v0.26.1" \
         --mark-database-version-on-success
     echo "Model provider table migrations completed."
 fi

docker/launch_backend_service.sh

@@ -203,7 +203,7 @@ run_mysql_migrations() {
         --stages tenant_model_provider,tenant_model_instance,tenant_model,model_id_config \
         --config conf/service_conf.yaml \
         --execute \
-        --database-version "v0.26.0" \
+        --database-version "v0.26.1" \
         --mark-database-version-on-success
     echo "Model provider table migrations completed."
 }