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

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

Author: pre-commit-ci[bot]

largestinteriorrectangle/lir_within_polygon.py

@@ -40,9 +40,7 @@ def check_for_opencv():
 
             cv = cv2
         except Exception:
-            raise ImportError(
-                """
+            raise ImportError("""
                 Missing optional dependency 'opencv-python' to compute lir
                 based on polygon. Use pip or conda to install it.
-                """
-            )
+                """)