Fix path in swml.yml to use correct relative path

Co-Authored-By: Fern Support <info@buildwithfern.com>

Author: fern-support

fern/products/swml.yml

@@ -7,4 +7,4 @@ navigation:
   - tab: overview
     layout:
       - page: Testing
-        path: ../../docs/pages/swml/testing.mdx
+        path: ../docs/pages/swml/testing.mdx