Updated Broken Links (#4076)

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There were two broken links in the Readme , I fixed it of the
cheatsheets and the Contribution guidelines Have a look
at my pr @davidberenstein1957

README.md

@@ -67,9 +67,9 @@ There are different options to get started:
 
 1. Take a look at our [quickstart page](https://docs.argilla.io/en/latest/getting_started/quickstart.html) 🚀
 
-2. Start contributing by looking at our [contributor guidelines](#🫱🏾‍🫲🏼-contribute) 🫱🏾‍🫲🏼
+2. Start contributing by looking at our [contributor guidelines](##🫱🏾‍🫲🏼-contribute) 🫱🏾‍🫲🏼
 
-3. Skip some steps with our [cheatsheet](#🎼-cheatsheet) 🎼
+3. Skip some steps with our [cheatsheet](##🎼-cheatsheet) 🎼
 
 ## 🎼 Cheatsheet