Fix workflow display with macro

main.py

@@ -1,13 +1,18 @@
 import requests
-import html
+import urllib.parse
+import json
 
 def define_env(env):
-    "Hook function"
+	"Hook function"
 
-    @env.macro
-    def workflowDemo(workflow_endpoint):
-        r = requests.get(url = workflow_endpoint)
-        workflow_json = r.content.decode("utf-8")
-        print(workflow_json)
-        return f"<div class='workflow_preview'><n8n-demo clicktointeract='true' frame='true' collapseformobile='false' workflow='{workflow_json}'></n8n-demo></div>"
+	@env.macro
+	def workflowDemo(workflow_endpoint):
+		r = requests.get(url = workflow_endpoint)
+		wf_data = r.json()
+		workflow_json = {
+			"nodes": wf_data['workflow']['nodes'],
+			"connections": wf_data['workflow']['connections']
+		}
+		encoded_workflow_json = urllib.parse.quote(json.dumps(workflow_json))
+		return f"<div class='workflow_preview'><n8n-demo clicktointeract='true' frame='true' collapseformobile='false' workflow='{encoded_workflow_json}'></n8n-demo></div>"