More 404 fixes

Author: maartenba

IdentityServer/v7/docs/content/upgrades/v7.1_to_v7.2.md

@@ -3,7 +3,7 @@ title: "Duende IdentityServer v7.1 to v7.2"
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-This upgrade guide covers upgrading from Duende IdentityServer v7.1 to v7.2 ([release notes](https://github.com/DuendeSoftware/IdentityServer/releases/tag/7.2.0)).
+This upgrade guide covers upgrading from Duende IdentityServer v7.1 to v7.2 ([release notes](https://github.com/DuendeSoftware/products/releases/tag/is-7.2.0)).
 
 ## What's New
 Duende IdentityServer 7.2 adds: