Fixed typo in documentation.
Fixed typo in documentation.

zcsteele/turbo,mniestroj/turbo,ddysher/turbo,YuanPeir-Chen/turbo-support-mipsel,luastoned/turbo,YuanPeir-Chen/turbo-support-mipsel,luastoned/turbo,ddysher/turbo,kernelsauce/turbo,zcsteele/turbo