Incorporate docs feedback for axelar bridge docs.

[oeggert]

Received feedback from zklend developers to improve docs on docs.xrplevm.org

Need for more detailed example and documentation

While the existing documentations and the assistance from Common Prefix team have been extremely helpful, it could have been even better if a fully functional code example was provided for a better developer onboarding and experience.

An ideal example would include:
1. Deploying a test contract to EVM chain
2. Creating and funding a test XRPL account
3. Initiating a transaction from that XRPL account to send to EVM chain
4. Waiting for the XRPL transaction to go through
5. Waiting for a new transaction & event to appear on AxelarGateway on EVM chain
6. Using a sufficiently funded EVM account to execute the transaction on EVM chain
7. Asserting that the transaction on EVM chain has been successful (token balance changes, etc)
8. A GMP call example written by Axelar can be a good inspiration for the example.

Furthermore, the existing documentation does not provide some important information that might be important to 
developers, such as  tokenDenom  of XRP and wETH