Fixed typo in llibs/community/langchain_community/storage/sql.py (#27029

)

- [ ] **PR title**: docs: fix typo in SQLStore import path

- [ ] **PR message**: 
- **Description:** This PR corrects a typo in the docstrings for the
class SQLStore(BaseStore[str, bytes]). The import path in the docstring
currently reads from langchain_rag.storage import SQLStore, which should
be changed to langchain_community.storage import SQLStore. This typo is
also reflected in the official documentation.
    - **Issue:** N/A
    - **Dependencies:** None
    - **Twitter handle:** N/A

Co-authored-by: Erick Friis <erick@langchain.dev>

libs/community/langchain_community/storage/sql.py

@@ -95,7 +95,7 @@ class SQLStore(BaseStore[str, bytes]):
 
         .. code-block:: python
 
-            from langchain_rag.storage import SQLStore
+            from langchain_community.storage import SQLStore
 
             # Instantiate the SQLStore with the root path
             sql_store = SQLStore(namespace="test", db_url="sqlite://:memory:")