Task: Api Workflow Test

n8n workflow:
{"nodes":[{"name":"Webhook","type":"n8n-nodes-base.webhook","position":[800,520],"webhookId":"6f7b288e-1efe-4504-a6fd-660931327269","parameters":{"path":"6f7b288e-1efe-4504-a6fd-660931327269","options":{},"responseMode":"responseNode"},"typeVersion":1},{"name":"Note1","type":"n8n-nodes-base.stickyNote","position":[780,380],"parameters":{"width":600,"height":280,"content":"## Create a simple API endpoint\n\nIn this workflow we should how to create a simple API endpoint with `Webhook` and `Respond to Webhook` nodes\n\n"},"typeVersion":1},{"name":"Respond to Webhook","type":"n8n-nodes-base.respondToWebhook","position":[1240,520],"parameters":{"options":{},"respondWith":"text","responseBody":"=The URL of the Google search query for the term \"{{$node[\"Webhook\"].json[\"query\"][\"first_name\"]}} {{$node[\"Webhook\"].json[\"query\"][\"last_name\"]}}\" is: {{$json[\"product\"]}}"},"typeVersion":1},{"name":"Create URL string","type":"n8n-nodes-base.set","position":[1020,520],"parameters":{"values":{"string":[{"name":"product","value":"=https://www.google.com/search?q={{$json[\"query\"][\"first_name\"]}}+{{$json[\"query\"][\"last_name\"]}}"}]},"options":{},"keepOnlySet":true},"typeVersion":1},{"name":"Note3","type":"n8n-nodes-base.stickyNote","position":[780,680],"parameters":{"width":600,"height":220,"content":"### How to use it\n1. Execute the workflow so that the webhook starts listening\n2. Make a test request by pasting, **in a new browser tab**, the test URL from the `Webhook` node and appending the following test at the end `?first_name=bob&last_name=dylen`\n\nYou should receive the following output in the new tab `The URL of the Google search query for the term \"bob dylen\" is: https://www.google.com/search?q=bob+dylen`\n\n"},"typeVersion":1}],"connections":{"Webhook":{"main":[[{"node":"Create URL string","type":"main","index":0}]]},"Create URL string":{"main":[[{"node":"Respond to Webhook","type":"main","index":0}]]}}}