activity: fix channel by participants query param
activity: fix channel by participants query param

rjeczalik/koding,jack89129/koding,alex-ionochkin/koding,koding/koding,sinan/koding,kwagdy/koding-1,mertaytore/koding,drewsetski/koding,rjeczalik/koding,sinan/koding,cihangir/koding,andrewjcasal/koding,drewsetski/koding,sinan/koding,kwagdy/koding-1,jack89129/koding,alex-ionochkin/koding,cihangir/koding,rjeczalik/koding,andrewjcasal/koding,usirin/koding,koding/koding,alex-ionochkin/koding,koding/koding,kwagdy/koding-1,acbodine/koding,szkl/koding,mertaytore/koding,mertaytore/koding,alex-ionochkin/koding,acbodine/koding,gokmen/koding,kwagdy/koding-1,alex-ionochkin/koding,acbodine/koding,rjeczalik/koding,alex-ionochkin/koding,andrewjcasal/koding,cihangir/koding,sinan/koding,jack89129/koding,drewsetski/koding,sinan/koding,rjeczalik/koding,mertaytore/koding,gokmen/koding,andrewjcasal/koding,mertaytore/koding,andrewjcasal/koding,koding/koding,szkl/koding,usirin/koding,kwagdy/koding-1,drewsetski/koding,usirin/koding,szkl/koding,alex-ionochkin/koding,andrewjcasal/koding,kwagdy/koding-1,andrewjcasal/koding,jack89129/koding,cihangir/koding,koding/koding,jack89129/koding,usirin/koding,rjeczalik/koding,cihangir/koding,koding/koding,mertaytore/koding,szkl/koding,rjeczalik/koding,koding/koding,gokmen/koding,drewsetski/koding,acbodine/koding,jack89129/koding,kwagdy/koding-1,usirin/koding,sinan/koding,szkl/koding,sinan/koding,drewsetski/koding,kwagdy/koding-1,usirin/koding,gokmen/koding,szkl/koding,jack89129/koding,usirin/koding,gokmen/koding,gokmen/koding,acbodine/koding,cihangir/koding,gokmen/koding,szkl/koding,mertaytore/koding,alex-ionochkin/koding,andrewjcasal/koding,acbodine/koding,cihangir/koding,szkl/koding,cihangir/koding,acbodine/koding,gokmen/koding,drewsetski/koding,usirin/koding,drewsetski/koding,sinan/koding,mertaytore/koding,acbodine/koding,koding/koding,rjeczalik/koding,jack89129/koding