chore: add find_charged_atoms_in_resonance_structures to api docs

Author: OleinikovasV

docs/api.rst

@@ -113,6 +113,7 @@ Miscellaneous
     get_contact_residues
     find_atoms_by_pattern
     estimate_formal_charges
+    find_charged_atoms_in_resonance_structures
     MatchWarning
     EvaluationWarning
     NoContactError