fix polygon rpc

Author: aditya520

contract_manager/store/chains/EvmChains.json

@@ -246,7 +246,7 @@
   {
     "id": "polygon",
     "mainnet": true,
-    "rpcUrl": "http://127.0.0.1:8545",
+    "rpcUrl": "https://polygon-rpc.com",
     "networkId": 137,
     "type": "EvmChain",
     "nativeToken": "MATIC"
@@ -1294,4 +1294,5 @@
     "networkId": 13374202,
     "type": "EvmChain"
   }
+  
 ]