add link to cli docs

Author: atravitz

cookbook/cofactors_rbfe.ipynb

@@ -65,7 +65,7 @@
     "\n",
     "\n",
     "<div class=\"alert alert-warning\">\n",
-    "Note that partial charges are already assigned for both the ligands and cofactors. See <a href=\"https://docs.openfree.energy/en/latest/cookbook/user_charges.html\">Assigning partial charges to an OpenFF Molecule</a>.\n",
+    "Note that partial charges are already assigned for both the ligands and cofactors. See <a href=\"https://docs.openfree.energy/en/latest/cookbook/user_charges.html\">Assigning partial charges to an OpenFF Molecule</a> or and <a href=\" https://docs.openfree.energy/en/latest/reference/cli/charge_molecules.html\">charge-molecules CLI command</a> for information on assigning partial charges.\n",
     "\n",
     "Supplying cofactors as SmallMoleculeCompoents means they will be parameterized using the small molecule force field, which might not be applicable in all situations.\n",
     "</div>\n"