message: speling error in README
  fixed a spelling error
diff: @@ -96,7 +96,7 @@ To perform whole protein docking:
  gnina -r rec.pdb -l lig.sdf --autobox_ligand rec.pdb -o whole_docked.sdf.gz --exhaustiveness 64
  ```
  -To utilize the default enemble CNN in the energy minimization during the refinement step of docking (10 times slower than the default rescore option):
  +To utilize the default ensemble CNN in the energy minimization during the refinement step of docking (10 times slower than the default rescore option):
  ```
  gnina -r rec.pdb -l lig.sdf --autobox_ligand orig.sdf --cnn_scoring refinement -o cnn_refined.sdf.gz
  ```
  