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

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

Author: pre-commit-ci[bot]

tests.py

@@ -621,7 +621,9 @@ def test_conversion_from_non_plain_text_file(self):
             self.assertEqualExceptForNewlineEnd(expected, received)
 
     # skip in ci
-    @unittest.skipIf(os.environ.get("CI") == "true", "Skipping PDF conversion test in CI environment")
+    @unittest.skipIf(
+        os.environ.get("CI") == "true", "Skipping PDF conversion test in CI environment"
+    )
     def test_pdf_conversion(self):
         with closed_tempfile(".pdf") as file_name:
             ret = pypandoc.convert_text(