fix trust env var name (#3504)
fix trust env var name (#3504)

Signed-off-by: Riyaz Faizullabhoy <97794a5efeea78234636d4fba0f499c15a92f5e3@docker.com>
thaJeztah/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,shubheksha/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,JimGalasyn/docker.github.io,docker/docker.github.io,johnstep/docker.github.io,JimGalasyn/docker.github.io,shin-/docker.github.io,anweiss/docker.github.io,shubheksha/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,shubheksha/docker.github.io,shubheksha/docker.github.io,anweiss/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,shin-/docker.github.io,anweiss/docker.github.io,shin-/docker.github.io,shubheksha/docker.github.io,johnstep/docker.github.io,londoncalling/docker.github.io,shin-/docker.github.io,johnstep/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,shin-/docker.github.io,johnstep/docker.github.io,johnstep/docker.github.io