Update docs/pos/operate-node/validator/staking-faq.md

Co-authored-by: Dra Murphy <149679879+kmurphypolygon@users.noreply.github.com>

Author: EmpieichO

docs/pos/operate-node/validator/staking-faq.md

@@ -150,7 +150,7 @@ Yes, hardware wallets are supported. You can use the **Connect Hardware Wallet**
 Staking through Binance is not yet supported. There will be an announcement if and when Binance starts supporting it.
 
 
-### Do I need to deposit Matic to the Polygon Mainnet network for staking?
+### Do I need to deposit Matic to the Polygon mainnet network for staking?
 No. All your funds need to be on the Main Ethereum Network.