- fix docstrings
- fix docstrings

ThiefMaster/sqlalchemy,sqlalchemy/sqlalchemy,j5int/sqlalchemy,graingert/sqlalchemy,wujuguang/sqlalchemy,monetate/sqlalchemy,ThiefMaster/sqlalchemy,bdupharm/sqlalchemy,sandan/sqlalchemy,zzzeek/sqlalchemy,robin900/sqlalchemy,sandan/sqlalchemy,bdupharm/sqlalchemy,wujuguang/sqlalchemy,monetate/sqlalchemy,graingert/sqlalchemy,robin900/sqlalchemy,j5int/sqlalchemy