Update build-open-source.md (#5220)

Add Tellor

docs/build/build-open-source.md

@@ -158,7 +158,7 @@ In the below sections, you can find a list of different layers of the Polkadot S
 | TEE                             | [Acurast](https://github.com/Acurast/acurast-core) 🟢, [Integritee](https://github.com/integritee-network/worker) 🟢, [substraTEE](https://github.com/scs/substraTEE) ⚪| [Keysafe Protocol](https://github.com/keysafe-protocol/keysafe-app) ⚪|
 | DeFi                            | [PrivaDEX](https://github.com/kapilsinha/privadex) ⚪, [Fusotao](https://github.com/uinb/fusotao) 🟢, [Reef](https://github.com/reef-defi/reef-chain) ⚪, [Diora](https://github.com/Diora-Network/Diora) ⚪, [Pendulum Chain](https://github.com/pendulum-chain/pendulum) 🟢, [Compound Gateway](https://github.com/compound-finance/gateway) ⚪, [Parallel Finance](https://github.com/parallel-finance/parallel) 🟡, [PINT](https://github.com/ChainSafe/PINT) ⚪, [Laminar Chain](https://github.com/laminar-protocol/laminar-chain) ⚪, [Acala](https://github.com/AcalaNetwork/Acala) 🟢, [Centrifuge](https://github.com/centrifuge/centrifuge-chain) 🟢, [Stafi](https://github.com/stafiprotocol/stafi-node) 🟡, [Definex](https://github.com/y2labs-0sh/definex) ⚪, [OAX Foundation](https://github.com/OAXFoundation/parrot) ⚪, [Cybex](https://github.com/alexxuyang/substrate-dex) ⚪, [Zenlink](https://github.com/zenlinkpro/pallet-zenlink) ⚪, [Swaps Pallet](https://github.com/lsaether/pallet-swaps) ⚪, [Polkadex](https://github.com/Polkadex-Substrate/Polkadex/tree/master) 🟡, [SubDEX](https://github.com/subdarkdex/subdex-parachain) ⚪, [HydraDX](https://github.com/galacticcouncil/hack.HydraDX-node) 🟢, [Substrate Stablecoin](https://github.com/apopiak/stablecoin) ⚪, [Standard protocol](https://github.com/digitalnativeinc/standard-substrate) ⚪, [Polkaswap](https://github.com/sora-xor/sora2-network) 🟢, [Curve AMM](https://github.com/equilibrium-eosdt/equilibrium-curve-amm) ⚪, [Konomi Network](https://github.com/konomi-network/cumulus/) ⚪, [Stable Asset](https://github.com/nutsfinance/stable-asset) 🟡, [Libra Payment](https://github.com/atscaletech/libra) ⚪, [Mangata](https://github.com/mangata-finance/mangata-node) 🟢, [Tidechain](https://github.com/tidelabs/tidechain) 🟢, [Basilisk](https://github.com/galacticcouncil/Basilisk-node) 🟡, [Polymesh](https://github.com/PolymeshAssociation/Polymesh) 🟢| DEX with privacy and confidentiality features such as those found in a [dark pool](https://en.wikipedia.org/wiki/Dark_pool)                                                            |
 | Smart contract chains           | [moonbeam](https://github.com/PureStake/moonbeam) 🟢, [Aleph-node](https://github.com/Cardinal-Cryptography/aleph-node) 🟢, [Edgeware](https://github.com/hicommonwealth/edgeware-node) ⚪, [ParaState](https://github.com/ParaState/substrate-ssvm-node) ⚪, [gear](https://github.com/gear-tech/gear) 🟢, [CENNZnet](https://github.com/cennznet/cennznet) ⚪, [SkyeKiwi](https://github.com/skyekiwi/skyekiwi-network) ⚪, [OAK-blockchain](https://github.com/OAK-Foundation/OAK-blockchain) 🟢, [ICE Blockchain](https://github.com/web3labs/ice-substrate) ⚪, [Polkadot Smart Chain](https://github.com/OmniBTC/PSC) ⚪, [Madara - Cairo/Starknet](https://github.com/keep-starknet-strange/madara) 🟢| smart contract chains with novel security approaches, smart contract chains based on existing toolchains                                                                               |
-| Oracle                          | [Laminar](https://github.com/laminar-protocol/open-runtime-module-library/tree/master/oracle) 🟢, [Chainlink-polkadot](https://github.com/smartcontractkit/chainlink-polkadot) ⚪, [Ares Protocol](https://github.com/aresprotocols/ares) ⚪, [Kylin Network](https://github.com/Kylin-Network/kylin-node) ⚪, [interbtc-clients oracle](https://github.com/interlay/interbtc-clients/tree/master/oracle) 🟢, [Anonima](https://github.com/webb-tools/anonima) ⚪, [SaaS3](https://github.com/SaaS3-Foundation/dRuntime-fat) ⚪, [Tellor](https://github.com/tellor-io/tellor-parachain-contracts) 🟡, [Bridgestate Oracle](https://github.com/diadata-org/bridgestate-ocw) 🟢
+| Oracle                          | [Tellor](https://github.com/tellor-io/tellor-pallet), [Laminar](https://github.com/laminar-protocol/open-runtime-module-library/tree/master/oracle) 🟢, [Chainlink-polkadot](https://github.com/smartcontractkit/chainlink-polkadot) ⚪, [Ares Protocol](https://github.com/aresprotocols/ares) ⚪, [Kylin Network](https://github.com/Kylin-Network/kylin-node) ⚪, [interbtc-clients oracle](https://github.com/interlay/interbtc-clients/tree/master/oracle) 🟢, [Anonima](https://github.com/webb-tools/anonima) ⚪, [SaaS3](https://github.com/SaaS3-Foundation/dRuntime-fat) ⚪, [Tellor](https://github.com/tellor-io/tellor-parachain-contracts) 🟡, [Bridgestate Oracle](https://github.com/diadata-org/bridgestate-ocw) 🟢
 | Identity/DID                    | [Parami](https://github.com/parami-foundation/parami-blockchain) ⚪, [Litentry](https://github.com/litentry/litentry-parachain) 🟢, [pallet-did](https://github.com/substrate-developer-hub/pallet-did) ⚪, [dot-id](https://github.com/prasad-kumkar/dot-id) ⚪|
 | IoT                             | [Nodle](https://github.com/NodleCode/chain) 🟢, [MXC/DataHighway](https://github.com/DataHighway-DHX/node) ⚪, [peaq-network-node](https://github.com/peaqnetwork/peaq-network-node) ⚪|
 | Verifiable Claims               | [KILT](https://github.com/KILTprotocol/kilt-node) 🟢, [Dock](https://github.com/docknetwork/dock-substrate) 🟢, [Fennel Protocol](https://github.com/fennelLabs/Fennel-Protocol) 🟡|