Fix typo

Author: Myoldmopar

cmake/PythonCopyStandardLib.py

@@ -41,5 +41,5 @@
             shutil.rmtree(os.path.join(root, this_dir))
 
 # on Windows the site_packages folder is inside the standard lib folder, so we need to delete that too
-if os.path.exists(os.path.join(target_dir, 'site_packages')):
-    shutil.rmtree(os.path.join(target_dir, 'site_packages'))
+if os.path.exists(os.path.join(target_dir, 'site-packages')):
+    shutil.rmtree(os.path.join(target_dir, 'site-packages'))