Add network name column to the Supported Chains page

[MantisClone]

Problem

The Request Network SDK uses network name, not chain id.

The full list of network names can be found in our SDK source code here: https://github.com/RequestNetwork/requestNetwork/blob/bae9bfd0fefb58c7df6a7005fe35d899aff64900/packages/types/src/currency-types.ts#L3-L36

Solution

Add a Network Name column to the Supported Chains page in the docs.

[VaibhavArora19]

I can take this up!