Update docs/core/testing/unit-testing-mstest-migration-from-v1-to-v3.md

Co-authored-by: Amaury Levé <[email protected]>

Author: engyebrahim

docs/core/testing/unit-testing-mstest-migration-from-v1-to-v3.md

@@ -1,6 +1,6 @@
 ---
 title: MSTest migration to v3
-description: Migration guide.
+description: Learn about migrating from legacy MSTest (MSTest v1) to latest MSTest (MSTest v3).
 author: engyebrahim
 ms.author: enjieid
 ms.date: 11/06/2024