.gitignore: specify the relative paths when we know them.
.gitignore: specify the relative paths when we know them.

kasper93/mpc-hc.org,kasper93/mpc-hc.org,FeodorFitsner/mpc-hc.org,Underground78/mpc-hc.org,Underground78/mpc-hc.org,mpc-hc/mpc-hc.org,FeodorFitsner/mpc-hc.org,FeodorFitsner/mpc-hc.org,mpc-hc/mpc-hc.org,Underground78/mpc-hc.org,mpc-hc/mpc-hc.org