fix: update question num

Author: yanglbme

main.py

@@ -9,6 +9,7 @@ def format_contest_md(content: str) -> str:
     res = re.findall(r"\[(.*?)\]\((.*?)\)", content)
     for _, link in res:
         num = link.split("/")[-2].split(".")[0]
+        num = int(num)
         content = content.replace(link, f"./lc/{num}.md")
     content = f"---\ncomments: true\n---\n\n" + content
     return content
@@ -20,6 +21,7 @@ def format_contest_md_en(content: str) -> str:
     res = re.findall(r"\[(.*?)\]\((.*?)\)", content)
     for _, link in res:
         num = link.split("/")[-2].split(".")[0]
+        num = int(num)
         content = content.replace(link, f"./lc/{num}.md")
     content = f"---\ncomments: true\n---\n\n" + content
     return content