fix the image name (#918)

Signed-off-by: chensuyue <[email protected]>

.github/workflows/docker/compose/texttosql-compose.yaml

@@ -3,7 +3,7 @@
 
 # this file should be run in the root of the repo
 services:
-  texttosql-langchain:
+  texttosql:
     build:
       dockerfile: comps/texttosql/langchain/Dockerfile
     image: ${REGISTRY:-opea}/texttosql:${TAG:-latest}