Issue19643 Fix whitespace

Doc/library/shutil.rst

@@ -433,12 +433,12 @@ will propagate. ::
 
     import os, stat
     import shutil
-    
+
     def remove_readonly(func, path, _):
         "Clear the readonly bit and reattempt the removal"
         os.chmod(path, stat.S_IWRITE)
-        func(path)   
-   
+        func(path)
+
     shutil.rmtree(directory, onerror=remove_readonly)
 
 .. _archiving-operations: