Added link to PDB-tools documentation
Added link to PDB-tools documentation

amjjbonvin/haddocking.github.io,haddocking/haddocking.github.io,latrocinia/haddocking.github.io,amjjbonvin/haddocking.github.io,amjjbonvin/haddocking.github.io,haddocking/haddocking.github.io,haddocking/haddocking.github.io,latrocinia/haddocking.github.io,amjjbonvin/haddocking.github.io,latrocinia/haddocking.github.io,latrocinia/haddocking.github.io,haddocking/haddocking.github.io