Merge pull request #161 from 0xPolygonID/fix/change-jsonld-url-for-merklized-oncahin-issuer

change URL

Author: ilya-korotya

docs/issuer/on-chain-issuer/on-chain-tutorial.md

@@ -189,7 +189,7 @@ You can use already deployed demo: https://onchain-merklized-issuer-demo.polygon
 
 2. You now need to define the query.
 
-   - **URL**: https://gist.githubusercontent.com/ilya-korotya/b06baa37453ed9aedfcb79100b84d51f/raw/balance-v1.jsonld
+   - **URL**: ipfs://QmbbTKPTJy5zpS2aWBRps1duU8V3zC84jthpWDXE9mLHBX ([Schema builder link](https://schema-builder.polygonid.me/schemas/7b470cbc-0d97-4022-9c70-e393e6ebc0d5))
    - **Schema type**: BalanceCredential
    - **Attribute field**: balance