Add references to OAuth tutorial

Author: ppcano

src/data/doc-examples/links.json

@@ -128,6 +128,12 @@
       "to": "",
       "url": "https://k6.io/blog/load-testing-with-postman-collections"
     },
+    {
+      "title": "Test OAuth secured APIs",
+      "description": "How to load test APIs secured with OAuth on Azure Active Directory and Okta.",
+      "to": "",
+      "url": "https://k6.io/blog/how-to-load-test-oauth-secured-apis-with-k6"
+    },
     {
       "title": "Load testing with Swagger/OpenAPI",
       "description": "How to generate a load test script out of an OpenAPI document.",

src/data/markdown/docs/05 Examples/02 Tutorials/03 oauth.md

@@ -0,0 +1,4 @@
+---
+title: 'Test OAuth secured APIs'
+redirect: 'https://k6.io/blog/how-to-load-test-oauth-secured-apis-with-k6'
+---