Fix erroneous headline for moving to mark
Fix erroneous headline for moving to mark

The headline indicated that it would be possible to move containers and *workspaces* to marks but the following text clearly shows that it should state containers and *windows*.
i3/i3,Airblader/i3,cornerman/i3,strake/i3,shdown/i3,ccryx/i3,i3/i3,Airblader/i3,shdown/i3,Chr1stoph/i3,Matmusia/i3,Chr1stoph/i3,MForster/i3,Chr1stoph/i3,strake/i3,cornerman/i3,avrelaun/i3,pronobis/i3,shdown/i3,stapelberg/i3,avrelaun/i3,strake/i3,acrisci/i3,Matmusia/i3,strake/i3,acrisci/i3,Airblader/i3,Airblader/i3-original,Chr1stoph/i3,ccryx/i3,MForster/i3,EvilPudding/i3,Airblader/i3-original,EvilPudding/i3,pronobis/i3,ccryx/i3,Matmusia/i3,i3/i3,stapelberg/i3,Airblader/i3-original,MForster/i3,stapelberg/i3,Airblader/i3-original,EvilPudding/i3,strake/i3,acrisci/i3,i3/i3,Matmusia/i3,pronobis/i3,avrelaun/i3,ccryx/i3,stapelberg/i3,acrisci/i3,Airblader/i3-original,shdown/i3,MForster/i3,pronobis/i3,Airblader/i3,EvilPudding/i3,cornerman/i3,acrisci/i3,cornerman/i3,avrelaun/i3