The new version of flake8 is linting f-strings (#1976)

* The new version of flake8 is linting f-strings

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

digital_image_processing/resize/resize.py

@@ -11,7 +11,7 @@ class NearestNeighbour:
 
     def __init__(self, img, dst_width: int, dst_height: int):
         if dst_width < 0 or dst_height < 0:
-            raise ValueError(f"Destination width/height should be > 0")
+            raise ValueError("Destination width/height should be > 0")
 
         self.img = img
         self.src_w = img.shape[1]