Fixed badge in docs

Author: PauBadiaM

docs/source/index.rst

@@ -5,7 +5,7 @@ decoupler - Ensemble of methods to infer biological activities
 
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-.. |MainBuild| image:: https://github.com/saezlab/decoupler-py/actions/workflows/main.yml/badge.svg
+.. |MainBuild| image:: https://github.com/saezlab/decoupler-py/actions/workflows/ci.yml/badge.svg
    :target: https://github.com/saezlab/decoupler-py/actions
 
 .. |Issues| image:: https://img.shields.io/github/issues/saezlab/decoupler-py.svg