Update src/content/docs/identityserver/upgrades/identityserver4-upgrade-analysis.mdx

Co-authored-by: Khalid Abuhakmeh <khalid.abuhakmeh@duendesoftware.com>

Author: maartenba

src/content/docs/identityserver/upgrades/identityserver4-upgrade-analysis.mdx

@@ -27,7 +27,7 @@ and added directly to any existing IdentityServer4 project. It does not require
 
 The tool's code was deliberately kept rudimentary and compatible with earlier C# versions to ensure maximum compatibility with older projects.
 
-The controller is designed to inspect client configuration from:
+The controller is designed to inspect client configurations from:
 1.  **In-Memory Clients**
 2.  **Entity Framework Core** (standard `IdentityServer4.EntityFramework` stores)