format code (#14)

migration/src/m20220101_000001_create_table.rs

python/llm/__init__.py

python/llm/embedding_model.py

python/svr/parse_user_docs.py

python/util/config.py

python/util/db_conn.py

src/api/dialog_info.rs

src/api/doc_info.rs

src/api/kb_info.rs

src/api/mod.rs

src/api/tag_info.rs

src/api/user_info.rs

src/entity/dialog2_kb.rs

src/entity/dialog_info.rs

src/entity/doc2_doc.rs

src/entity/doc_info.rs

src/entity/kb2_doc.rs

src/entity/kb_info.rs

src/entity/mod.rs

src/entity/tag2_doc.rs