Corrected docs for declarative synonym incorrectly referring to instruments instead of descriptor.
Corrected docs for declarative synonym incorrectly referring to instruments instead of descriptor.

Cito/sqlalchemy,itkovian/sqlalchemy,pdufour/sqlalchemy,sandan/sqlalchemy,olemis/sqlalchemy,hsum/sqlalchemy,hsum/sqlalchemy,monetate/sqlalchemy,elelianghh/sqlalchemy,WinterNis/sqlalchemy,wujuguang/sqlalchemy,WinterNis/sqlalchemy,graingert/sqlalchemy,zzzeek/sqlalchemy,wfxiang08/sqlalchemy,alex/sqlalchemy,Cito/sqlalchemy,graingert/sqlalchemy,inspirehep/sqlalchemy,sqlalchemy/sqlalchemy,brianv0/sqlalchemy,pdufour/sqlalchemy,davidjb/sqlalchemy,ThiefMaster/sqlalchemy,EvaSDK/sqlalchemy,EvaSDK/sqlalchemy,halfcrazy/sqlalchemy,bootandy/sqlalchemy,elelianghh/sqlalchemy,olemis/sqlalchemy,wfxiang08/sqlalchemy,bdupharm/sqlalchemy,robin900/sqlalchemy,brianv0/sqlalchemy,davidjb/sqlalchemy,wujuguang/sqlalchemy,itkovian/sqlalchemy,ThiefMaster/sqlalchemy,alex/sqlalchemy,dstufft/sqlalchemy,bootandy/sqlalchemy,dstufft/sqlalchemy,inspirehep/sqlalchemy,halfcrazy/sqlalchemy,epa/sqlalchemy,j5int/sqlalchemy,epa/sqlalchemy,davidfraser/sqlalchemy,Cito/sqlalchemy,276361270/sqlalchemy,monetate/sqlalchemy,276361270/sqlalchemy,sandan/sqlalchemy,davidfraser/sqlalchemy,Akrog/sqlalchemy,robin900/sqlalchemy,j5int/sqlalchemy,alex/sqlalchemy,bdupharm/sqlalchemy,Akrog/sqlalchemy