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

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Author: pre-commit-ci[bot]

docs/reference/ImageMorph.rst

@@ -100,10 +100,10 @@ Example: applying a simple dilation operation::
 
     with Image.open("input.png") as im:
         im = im.convert("L")
-    
+
         # Built-in 8-connected dilation
         op = ImageMorph.MorphOp(op_name="dilation8")
-    
+
         count, out = op.apply(im)
     out.save("dilated.png")