fix casing of (#7635)

Author: danmoseley

playground/AzureFunctionsEndToEnd/AzureFunctionsEndToEnd.AppHost/AzureFunctionsEndToEnd.AppHost.csproj

@@ -14,7 +14,7 @@
     <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.EventHubs" />
     <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.Storage" />
     <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.ServiceBus" />
-    <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.CosmosDb" />
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.CosmosDB" />
     <AspireProjectOrPackageReference Include="Aspire.Hosting.AppHost" />
   </ItemGroup>