Fix flakehell lint error

0x2b3bfa0 · 0x2b3bfa0 · commit 9b10da9c3bb0 · 2021-07-04T16:02:24.000+02:00
flakehell/flakehell#10
diff --git a/pyproject.toml b/pyproject.toml
@@ -63,6 +63,7 @@ format = "grouped"
 max_line_length = 79
 show_source = true
 per_file_ignores=[""]
+extended_default_ignore=[]
 exclude = ["documentation/steganography/example.ipynb"]
 
 [tool.flakehell.plugins]
