Task: Serve a static HTML page when a link is accessed

n8n workflow JSON:
{"nodes":[{"name":"Respond to Webhook","type":"n8n-nodes-base.respondToWebhook","position":[450,150],"parameters":{"options":{"responseHeaders":{"entries":[{"name":"Content-Type","value":"text/html; charset=UTF-8"}]}},"respondWith":"text","responseBody":"<!doctype html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"utf-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n\n    <link href=\"https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css\" rel=\"stylesheet\" integrity=\"sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3\" crossorigin=\"anonymous\">\n\n    <title>Hello, world!</title>\n  </head>\n  <body>\n    <h1>Hello, world!</h1>\n\n    <script src=\"https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js\" integrity=\"sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p\" crossorigin=\"anonymous\"></script>\n  </body>\n</html>\n"},"typeVersion":1},{"name":"Webhook","type":"n8n-nodes-base.webhook","position":[250,150],"webhookId":"db437850-0e90-4eb7-b383-f8438ea1bd66","parameters":{"path":"my-form","options":{},"responseMode":"responseNode"},"typeVersion":1}],"connections":{"Webhook":{"main":[[{"node":"Respond to Webhook","type":"main","index":0}]]}}}