message: chore(readme): fix outdated network api, closes
diff: @@ -27,7 +27,7 @@ const mocknet = new StacksMocknet();
  Setting a custom node URL
  ```typescript
  -network.coreApiUrl = 'https://www.mystacksnode.com/';
  +const network = new StacksMainnet({ url: 'https://www.mystacksnode.com/' });
  ```
  Check if network is mainnet
  @@ -65,7 +65,11 @@ Get various API URLs
  const abiUrl = network.getAbiApiUrl(address, contractName);
  const functionName = 'hello';
  - const readOnlyFunctionCallUrl = network.getReadOnlyFunctionCallApiUrl(address, contractName, functionName);
  +const readOnlyFunctionCallUrl = network.getReadOnlyFunctionCallApiUrl(
  + address,
  + contractName,
  + functionName
  +);
  const nodeInfoUrl = network.getInfoUrl();
  