Fix broken links, point to true index

[elliotBraem]

In code, we may find <Link that has href pointing to `widgetSrc: "${config_account}/widget/app",

These should be using the actual root at /Index instead.

There is a bos-workspace helper for this where ${config_index} will be replaced with "trylivepeer.near/widget/Index", because of our bos.config.json. Use widgetSrc: "${config_index},

{
	"account": "trylivepeer.near",
	"aliases": ["./aliases.mainnet.json"],
  "overrides": {
    "testnet": {
      "account": "trylivepeer.testnet",
      "aliases": ["./aliases.testnet.json"],
      "index": "trylivepeer.testnet/widget/Index"
    }
  },
  "index": "trylivepeer.near/widget/Index"
}