Subgraph indexing error

[dadaphl]

The documentation links two subgraphs for Approved Kovan collateral currencies and price identifiers. However those subgraphs present indexing error

docs/docs/developers/deploy-an-lsp.md

Lines 24 to 25 in b30b26c

	- [Approved Kovan collateral currencies subgraph query](https://thegraph.com/explorer/subgraph/umaprotocol/uma-kovan?query=Whitelisted%20Collateral%20Currencies)
	- [Approved Kovan price identifiers subgraph query](https://thegraph.com/explorer/subgraph/umaprotocol/uma-kovan?query=Pricefeed%20Identifiers)