More information should be added to the account section of writeContract

[SyedAsadKazmi]

In the account section of writeContract, it is mentioned that account can be of type Account or Address:

It would be great if the description were more detailed, such as:

account can be an of type Address when calling through the wallet directly from a UI (using the browser's injected provider).

In contrast, account can be an type Account in any case, whether the signer comes from the browser's injected provider or JSON-RPC.

Created a PR #3502 for the same.