Auto merge of #3822 - hi-rustin:rustin-patch-GitHub, r=Turbo87
Auto merge of #3822 - hi-rustin:rustin-patch-GitHub, r=Turbo87

Fix typo in env sample: github -> GitHub

github -> GitHub

rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io