Fix error message

Author: pinin4fjords

bin/filter_gtf.py

@@ -30,7 +30,7 @@ def tab_delimited(file: str) -> float:
 def filter_gtf(fasta: str, gtf_in: str, filtered_gtf_out: str, skip_transcript_id_check: bool) -> None:
     """Filter GTF file based on FASTA sequence names."""
     if tab_delimited(gtf_in) != 8:
-        raise ValueError("Invalid GTF file: Expected 8 tab-separated columns.")
+        raise ValueError("Invalid GTF file: Expected 9 tab-separated columns.")
 
     seq_names_in_genome = extract_fasta_seq_names(fasta)
     logger.info(f"Extracted chromosome sequence names from {fasta}")