Updates index.md to fix verb conjugation (#2937)

Author: jpgninja

docs/integrations/builtin/core-nodes/n8n-nodes-base.webhook/index.md

@@ -16,7 +16,7 @@ hide:
 
 Use the Webhook node to create [webhooks](https://en.wikipedia.org/wiki/Webhook){:target=_blank .external-link}, which can receive data from apps and services when an event occurs. It's a trigger node, which means it can start an n8n workflow. This allows services to connect to n8n and run a workflow.
 
-You can use the Webhook node as a trigger for a workflow when you want to receive data and run a workflow based on the data. The Webhook node also supports returning the data generated at the end of a workflow. This makes it useful for build a workflow to process data and return the results, like an API endpoint.
+You can use the Webhook node as a trigger for a workflow when you want to receive data and run a workflow based on the data. The Webhook node also supports returning the data generated at the end of a workflow. This makes it useful for building a workflow to process data and return the results, like an API endpoint.
 
 The webhook allows you to trigger workflows from services that don't have a dedicated app trigger node.