Give script more descriptive name

scripts/expand_roda_duplicates.py → scripts/expand_alignment_duplicates.py

 """
-The RODA database is non-redundant, meaning that it only stores one explicit
-representative alignment directory for all PDB chains in a 100% sequence
-identity cluster. In order to add explicit alignments for all PDB chains, this
-script will add the missing chain directories and symlink them to their
-representative alignment directories.
+The OpenProteinSet alignment database is non-redundant, meaning that it only
+stores one explicit representative alignment directory for all PDB chains in a
+100% sequence identity cluster. In order to add explicit alignments for all PDB
+chains, this script will add the missing chain directories and symlink them to
+their representative alignment directories. This is required in order to train
+OpenFold on the full PDB, not just one representative chain per cluster.
 """
 
 from argparse import ArgumentParser
@@ -52,6 +53,9 @@ def main(alignment_dir: Path, duplicate_chains_file: Path):
     with open(duplicate_chains_file, "r") as fp:
         duplicate_chains = [list(line.strip().split()) for line in fp]
 
+    # convert to absolute path for symlink creation
+    alignment_dir = alignment_dir.resolve()
+
     create_duplicate_dirs(duplicate_chains, alignment_dir)