refactor: 重构文档向量相关代码结构

dao/dataset_index.go

@@ -51,7 +51,7 @@ func (d *datasetIndexDao) InsertIndex(ctx context.Context, indexName string) (er
 		USING ivfflat (vector vector_cosine_ops)
 		WITH (lists = 100)
 		WHERE vector IS NOT NULL;
-	`, indexName, gfdb.TablePrefix+public.TableNameDocumentChunk)
+	`, indexName, gfdb.TablePrefix+public.TableNameDocumentVector)
 	_, err = db.Exec(ctx, sqlStr)
 	return
 }