Update secure-data.md

Author: Rick-Anderson

aspnetcore/security/authorization/secure-data.md

@@ -68,7 +68,7 @@ This tutorial is advanced. You should be familiar with:
 [Download](xref:index#how-to-download-a-sample) the [completed](https://github.com/dotnet/AspNetCore.Docs/tree/main/aspnetcore/security/authorization/secure-data/samples) app. [Test](#test-the-completed-app) the completed app so you become familiar with its security features.
 
 > [!TIP]
-> Use [`git sparse-checkout`](https://git-scm.com/docs/git-sparse-checkout) to only download the sample subfolder
+> Use [`git sparse-checkout`](https://git-scm.com/docs/git-sparse-checkout) to only download the sample subfolder.
 For example:
 ```
 git clone --depth 1 --filter=blob:none https://github.com/dotnet/AspNetCore.Docs.git --sparse