add rpc json playground

Author: kmurphypolygon

docs/img/learn/maticjs-adapter-contract-01.png

@@ -3,6 +3,6 @@ hide:
 - toc
 ---
 
-<!--<embed type="text/html" src="https://playground.open-rpc.org/?schemaUrl=https://raw.githubusercontent.com/0xPolygon/polygon-docs/3eb44779e7380e91e5c92f160424159a3da1bdba/docs/zkEVM/api/zkevm.openrpc.json?uiSchema[appBar][ui:input]=false&uiSchema[appBar][ui:splitView]=false" width="100%" height="1000px">-->
+<embed type="text/html" src="https://playground.open-rpc.org/?schemaUrl=https://raw.githubusercontent.com/0xPolygon/polygon-docs/3eb44779e7380e91e5c92f160424159a3da1bdba/docs/zkEVM/api/zkevm.openrpc.json&uiSchema[appBar][ui:input]=false&uiSchema[appBar][ui:splitView]=false" width="100%" height="1000px">
 
 <embed type="text/html" src="https://raw.githubusercontent.com/0xPolygon/polygon-docs/main/docs/learn/agglayer.md" width="100%" height="1000px">