Update README.md

Author: alesanchezr

README.md

@@ -3,7 +3,7 @@
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 <p>
- <h2 align="center"> Python exercises at 4Geeks Academy (beta) </h2>
+ <h2 align="center"> Python List Exercises at 4Geeks Academy (beta) </h2>
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 Complete selection of autograded Python exercises, anyone interested in learning Python!