fix conversation api doc
fix conversation api doc

Change-Id: I5f936ff709d6b7becd33eb9c517a13a712d0490d
Reviewed-on: https://gerrit.instructure.com/6604
Reviewed-by: BJ Homer <3d26bb3930946e3370762d769a073cece444c2d8@instructure.com>
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>

icelab/canvas,faraazkhan/canvas,instructure/canvas-lms,grahamb/canvas-lms,greyhwndz/canvas-lms,nditech/red-innovadores-lms,samuels410/greatlakes-lms,SwinburneOnline/canvas-lms,ankithbti/canvas_lms,tgroshon/canvas-lms,jay3126/canvas-lms,sfu/canvas-lms,fronteerio/canvas-lms,sdeleon28/canvas-lms,dgynn/canvas-lms,juoni/canvas-lms,parbros/red-innovadores-lms,SwinburneOnline/canvas-lms,utkarshx/canvas-lms,Unow/canvas-lms,eCNAP/CANVAS,venturehive/canvas-lms,djbender/canvas-lms,wimemx/Canvas,tgroshon/canvas-lms,wrdsb/canvas-lms,efrj/canvas-lms,HotChalk/canvas-lms,faraazkhan/canvas,AndranikMarkosyan/lms,instructure/canvas-lms,landonwilkins/canvas-lms,venturehive/canvas-lms,shidao-fm/canvas-lms,kyroskoh/canvas-lms,tgroshon/canvas-lms,leftplusrightllc/canvas-lms,HotChalk/canvas-lms,va7map/canvas-lms,matematikk-mooc/canvas-lms,faraazkhan/canvas,merichar/canvas-lms,merichar/canvas-lms,usmschuck/canvas,whalejasmine/canvas-lms,djbender/canvas-lms,wye0220/shindig-canvas,wimemx/Canvas,va7map/canvas-lms,arrivu/qibla-ecampus,Rvor/canvas-lms,Unow/canvas-lms,shidao-fm/canvas-lms,narigone/canvas,instructure/canvas-lms,utkarshx/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,landonwilkins/canvas-lms,grahamb/canvas-lms,arrivu/arrivu-lms,instructure/canvas-lms,wye0220/shindig-canvas,instructure/canvas-lms,AndranikMarkosyan/lms,instructure/canvas-lms,loganrun/pincan,redconfetti/canvas-lms,utkarshx/canvas-lms,Rvor/canvas-lms,fronteerio/canvas-lms,ottenhoff/canvas-lms,gbleydon/canvas-lms,rup/Tarrax,utkarshx/canvas-lms,grahamb/canvas-lms,skmezanul/canvas-lms,greyhwndz/canvas-lms,loganrun/pincan,arrivu/arrivu-lms,ShreniiNepal/shrenii_lmp,Unow/ins,usmschuck/canvas,gbleydon/canvas-lms,rup/Tarrax,rup/Tarrax,Unow/canvas-lms,skmezanul/canvas-lms,grahamb/canvas-lms,nditech/red-innovadores-lms,HotChalk/canvas-lms,whalejasmine/canvas-lms,eCNAP/CANVAS,Jyaasa/canvas-lms,grahamb/canvas-lms,wrdsb/canvas-lms,narigone/canvas,redconfetti/canvas-lms,juoni/canvas-lms,Jyaasa/canvas-lms,em2/canvas-lms,jay3126/canvas-lms,efrj/canvas-lms,sfu/canvas-lms,gbleydon/canvas-lms,Rvor/canvas-lms,juoni/canvas-lms,venturehive/canvas-lms,sli7246/canvas_branch,usmschuck/canvas,dgynn/canvas-lms,narigone/canvas,sli7246/canvas_branch,Unow/ins,samuels410/greatlakes-lms,wrdsb/canvas-lms,merichar/canvas-lms,kyroskoh/canvas-lms,sdeleon28/canvas-lms,tgroshon/canvas-lms,parbros/red-innovadores-lms,SwinburneOnline/canvas-lms,wrdsb/canvas-lms,skmezanul/canvas-lms,ShreniiNepal/shrenii_lmp,matematikk-mooc/canvas-lms,snehakachroo1/LSI_replica,whalejasmine/canvas-lms,landonwilkins/canvas-lms,jay3126/canvas-lms,djbender/canvas-lms,eCNAP/CANVAS,ShreniiNepal/shrenii_lmp,ottenhoff/canvas-lms,fronteerio/canvas-lms,Jyaasa/canvas-lms,samuels410/greatlakes-lms,ankithbti/canvas_lms,dgynn/canvas-lms,arrivu/jigsaw-lms,arrivu/qibla-ecampus,wimemx/Canvas,usmschuck/canvas,antoniuslin/canvas-lms,antoniuslin/canvas-lms,sli7246/canvas_branch,arrivu/arrivu-lms,nditech/red-innovadores-lms,sfu/canvas-lms,roxolan/canvas-lms,antoniuslin/canvas-lms,efrj/canvas-lms,Unow/ins,arrivu/hoodemo,jay3126/canvas-lms,greyhwndz/canvas-lms,sdeleon28/canvas-lms,SwinburneOnline/canvas-lms,samuels410/greatlakes-lms,snehakachroo1/LSI_replica,kyroskoh/canvas-lms,AndranikMarkosyan/lms,icelab/canvas,em2/canvas-lms,whalejasmine/canvas-lms,kyroskoh/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,venturehive/canvas-lms,arrivu/hiring-site,greyhwndz/canvas-lms,HotChalk/canvas-lms,juoni/canvas-lms,wye0220/shindig-canvas,parbros/red-innovadores-lms,va7map/canvas-lms,leftplusrightllc/canvas-lms,sdeleon28/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,ShreniiNepal/shrenii_lmp,em2/canvas-lms,roxolan/canvas-lms,shidao-fm/canvas-lms,nditech/red-innovadores-lms,leftplusrightllc/canvas-lms,narigone/canvas,arrivu/hiring-site,arrivu/hoodemo,roxolan/canvas-lms,loganrun/pincan,arrivu/hoodemo,AndranikMarkosyan/lms,ottenhoff/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,ankithbti/canvas_lms,redconfetti/canvas-lms,instructure/canvas-lms,shidao-fm/canvas-lms,arrivu/jigsaw-lms,snehakachroo1/LSI_replica,icelab/canvas,leftplusrightllc/canvas-lms,arrivu/hiring-site,arrivu/qibla-ecampus,matematikk-mooc/canvas-lms,va7map/canvas-lms,eCNAP/CANVAS,djbender/canvas-lms,Jyaasa/canvas-lms,arrivu/jigsaw-lms,antoniuslin/canvas-lms,roxolan/canvas-lms,skmezanul/canvas-lms,landonwilkins/canvas-lms,snehakachroo1/LSI_replica,Rvor/canvas-lms