Update README.md

Author: 02loveslollipop

README.md

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 # Cuanto pal 3
 [![React App Test with Selenium](https://github.com/02loveslollipop/CuantoPal3/actions/workflows/python-selenium-ci-workflow.yaml/badge.svg)](https://github.com/02loveslollipop/CuantoPal3/actions/workflows/python-selenium-ci-workflow.yaml)
-![HomeCuantoPal3](./icon/Mockup.png)
+
+![HomeCuantoPal3](icon/icon-167x167.png)
 
 > A web/mobile application that allows you to calculate the grade you need to pass a course.