chore: Grammar fix in VDB provider README ("a importable") (#39577)

api/providers/vdb/README.md

@@ -29,7 +29,7 @@ In `pyproject.toml`:
 pgvector = "dify_vdb_pgvector.pgvector:PGVectorFactory"
 ```
 
-The value is **`module:attribute`**: a importable module path and the class implementing `AbstractVectorFactory`.
+The value is **`module:attribute`**: an importable module path and the class implementing `AbstractVectorFactory`.
 
 ### How registration works
 

dify-agent-runtime/README.md

@@ -41,7 +41,7 @@ docker build -f dify-agent-runtime/docker/Dockerfile \
   dify-agent-runtime/
 ```
 
-### Runing docker container
+### Running docker container
 
 ```
 docker run -d --name dify-agent-runtime \