chore: tweaked examples to run without errors (#24)

* chore: changed to running exmaples

* chore: cleanup

pages/nodejs.mdx

@@ -54,7 +54,7 @@ async function followTipExample() {
   ]);
 
   for await (const event of tip) {
-    console.log(event.block.header.slot);
+    console.log(event);
   }
 }
 
@@ -127,7 +127,7 @@ async function searchUtxosByAddressExample() {
   );
 
   utxos.forEach((utxo) => {
-    console.log(utxo.parsedValued?.script);
+    console.log(utxo);
   });
 }
 
@@ -151,7 +151,7 @@ async function submitTxExample() {
     }
   });
 
-  const txSample = "/* Tx cborHex */";
+  const txSample = "84a300d90102818258203dc5d9977e7b3d51acaea81031d2f461404536b2828549b73876a5980295f81b00018282581d60916c769efc6e2a3339594818a1d0c3998c29e3a6303d8711de8567591a004c4b4082581d60916c769efc6e2a3339594818a1d0c3998c29e3a6303d8711de8567591b0000000253bcffb3021a0002990da100d9010281825820526fa19e3694cda4f3c0d2fb2d2bb8768925eccc49a89d5f12b1972644ac769858403d6d6599193b17e67827cd9f48aaf35ac762c6fb0c5402c52724f307b69ff96f3f7e6c3fb107670c28679c148bf510f479c01a34b9d95d0dbb7e4ff6f3cb560af5f6";
   const txHash = await submitClient.submitTx(Buffer.from(txSample, "hex"));
 
   const txHashHex = Buffer.from(txHash).toString("hex");