Fix TOC tree

[hannahbaumann]

Input submission checklist

• [ ] created a directory for each system based on the template directory
• [ ] named and placed the directory with the following pattern: input_structures/prepared_structures/<set_name>/<system_name>

For each submitted directory:

• [ ] filled in system preparation details in the PREPARATION_DETAILS.md file
• [ ] added a PDB file with the protein named protein.pdb
• [ ] removed any cofactors from the PDB file and placed them in cofactors.sdf
• [ ] kept cystallographic waters and metals in the PDB file
• [ ] tested the PDB and, if available, cofactors.sdf file using the input validation script
• [ ] copied over the ligands SDF file to a file named ligands.sdf and removed any duplicate binding modes or protonation states, keeping the more favorable state

Summary of changes

Licensing agreement

• [x] I agree to release these inputs under the combined MIT and CCBY SA 4.0 licenses of this repository