update links to docs (#939)

README.md

@@ -20,8 +20,7 @@ finally makes using a blockchain protocol easy for both developers and consumers
 [Check out quick start documentation](https://docs.nearprotocol.com/quick_start), specifically:
   - [Build your first app in NEAR Studio](https://docs.nearprotocol.com/quick_start/easy)
   - [Running local DevNet](https://docs.nearprotocol.com/quick_start/advanced)
-  - [Join TestNet](https://docs.nearprotocol.com/quick_start/expert)
-  - [Build an ERC-20 contract](https://docs.nearprotocol.com/tutorials/token)
+  - [Join TestNet](https://docs.nearprotocol.com/tutorials/run-your-own-testnet)
 
 Develop and deploy contracts without any setup required using [NEAR Studio](https://studio.nearprotocol.com):