fix: use Markdown syntax for images.

ARTICLE.md

@@ -1,4 +1,4 @@
-##### Citation 📝
+### Citation 📝
 
 If our work is useful for your research, please consider citing:
 
@@ -14,11 +14,12 @@ If our work is useful for your research, please consider citing:
 }
 ```
 
-##### License 📋
+### License 📋
 
 This project is licensed under [S-Lab License 1.0](https://huggingface.co/hzxie/city-dreamer/blob/main/LICENSE).
 Redistribution and use for non-commercial purposes should follow this license.
 
+![Counter](https://api.infinitescript.com/badgen/count?name=hzxie/CityDreamer&ltext=Visitors&color=f97316)
+
 ---
 
-<img src='https://api.infinitescript.com/badgen/count?name=hzxie/CityDreamer&ltext=Visitors&color=fdba74' style="margin: 0 auto">