docs: added Goerli faucet

Author: jaybuidl

pnk-token.md

@@ -32,6 +32,7 @@ PNK is used both to stake (for the possibility to become a juror and to protect
 
 Call `request` function to receive 10,000 PNK. It only gives once for each address.
 
+* [Goerli PNK Faucet]([0x4B89e798B10478A839Ea0Abcf86C4B94A3C782A4](https://goerli.etherscan.io/address/0x4B89e798B10478A839Ea0Abcf86C4B94A3C782A4#writeContract))
 * [Ropsten PNK Faucet](https://ropsten.etherscan.io/address/0x9AdCEAa6CFd7182b838Beb085e97729EB1Da681E#writeContract)
 * [Kovan PNK Faucet](https://kovan.etherscan.io/address/0x4e95b2e0ecb3bd394e1dddd775504820a746d3bd#writeContract)
 * [Rinkeby PNK Faucet](https://rinkeby.etherscan.io/address/0xb01c9de0e9de0a6cab6df586484707b7078de684#writeContract)