[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

tools/bep_gantt_html_create.py

@@ -2,6 +2,7 @@
 
 Also include a timeline of the main BIDS events.
 """
+
 from __future__ import annotations
 
 from datetime import datetime

tools/bep_gantt_mermaid_insert.py

@@ -1,4 +1,5 @@
 """Creates a Gantt chart for the completed BEPs"""
+
 from __future__ import annotations
 
 from pathlib import Path

tools/convert_to_md.py

@@ -10,6 +10,7 @@
     - using the html version of the tables instead of the markdown version
       because the pandoc version of the markdown tables is not very good
 """
+
 import datetime
 from pathlib import Path