Reference credential in HTTP request block (#4218)

skyvern-frontend/src/routes/workflows/editor/nodes/HttpRequestNode/HttpRequestNode.tsx

@@ -398,6 +398,10 @@ function HttpRequestNode({ id, data }: NodeProps<HttpRequestNodeType>) {
                 Use "Quick Headers" in the headers section to add common
                 authentication and content headers
               </li>
+              <li>
+                Pass a credential/secret parameter and reference it in headers
+                or body with {"{{ my_credential.password }}"}
+              </li>
               <li>
                 The request will return response data including status, headers,
                 and body