Reformat setup.cfg flake8 ignore option to make current flake8 happy

setup.cfg

@@ -67,15 +67,24 @@ extend-exclude =
 # The following issues are ignored because they do not match our code style:
 ignore =
 	# These E1 checks report many false positives for code that is (consistently) indented with tabs alone.
-	E101, # indentation contains mixed spaces and tabs
-	E117, # over-indented
-	E126, # continuation line over-indented for hanging indent
-	E226, # missing whitespace around arithmetic operator
-	E261, # at least two spaces before inline comment
-	E501, # line too long
-	W191, # indentation contains tabs
-	W293, # blank line contains whitespace
-	W503, # line break before binary operator
+	# indentation contains mixed spaces and tabs
+	E101,
+	# over-indented
+	E117,
+	# continuation line over-indented for hanging indent
+	E126,
+	# missing whitespace around arithmetic operator
+	E226,
+	# at least two spaces before inline comment
+	E261,
+	# line too long
+	E501,
+	# indentation contains tabs
+	W191,
+	# blank line contains whitespace
+	W293,
+	# line break before binary operator
+	W503,
 
 [mypy]
 files=src/**/*.py