[Fix](CI) ignore markdown file suffix changes in deadlink check (apache#1447)

## Versions 

- [ ] dev
- [ ] 3.0
- [ ] 2.1
- [ ] 2.0

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- [ ] English

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Author: zclllyybb

check_move.py

@@ -56,6 +56,13 @@ def process_md_file(file_path):
                     full_path += ".md"
 
                 for [from_path, to_path] in move_pairs:
+                    from_base, from_ext = os.path.splitext(from_path)
+                    to_base, to_ext = os.path.splitext(to_path)
+                    if (from_ext in [".md", ".mdx"] and to_ext in [".md", ".mdx"]) and (
+                        from_base == to_base
+                    ):
+                        continue
+
                     # In md, the link relative path starts from the directory where the document is located, not the document
                     relative_to_path = os.path.relpath(
                         to_path, os.path.dirname(file_path)