updated badge link

README.md

 ## csst_proto 
-[![Documentation Status](https://readthedocs.org/projects/csst/badge/?version=latest)](https://csst.readthedocs.io/en/latest/?badge=latest)
+[![Documentation Status](https://readthedocs.org/projects/csst-proto/badge/?version=latest)](https://csst-proto.readthedocs.io/en/latest/?badge=latest)
  
 CSST L1 pipeline prototype.
 

doc/source/index.rst

@@ -10,8 +10,8 @@ csst_proto
    :description lang=cn: Automate building, versioning, and hosting of your technical documentation continuously on Read the Docs.
 
 
-.. image:: https://readthedocs.org/projects/csst/badge/?version=latest
-    :target: https://csst.readthedocs.io/en/latest/?badge=latest
+.. image:: https://readthedocs.org/projects/csst-proto/badge/?version=latest
+    :target: https://csst-proto.readthedocs.io/en/latest/?badge=latest
     :alt: Documentation Status