Update README.md (dotnet#35539)

Fix recently changed Snippets 5000 build validation workflow badge.

README.md

@@ -40,7 +40,7 @@ to clarify expected behavior in our community. For more information, see the [.N
 - [![MSDocs build verifier](https://github.com/dotnet/docs/actions/workflows/docs-verifier.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/docs-verifier.yml):  Runs various Markdown verifications, beyond the linter, such as ensuring links and redirects are valid.
 - [![No response](https://github.com/dotnet/docs/actions/workflows/no-response.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/no-response.yml):  If an issue is labeled with `needs-more-info` and the op doesn't respond within 14 days, the issue is closed.
 - [![OPS status checker](https://github.com/dotnet/docs/actions/workflows/check-for-build-warnings.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/check-for-build-warnings.yml):  Builds the site for the PR in context, and verifies the build reporting either, `success,` `warnings`, or `error`.
-- [![Snippets 5000](https://github.com/dotnet/docs/actions/workflows/build-validation.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/build-validation.yml):  Custom .NET build validation, locates code impacted by a PR, and builds.
+- [![Snippets 5000](https://github.com/dotnet/docs/actions/workflows/snippets5000.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/snippets5000.yml):  Custom .NET build validation, locates code impacted by a PR, and builds.
 - [![Target supported version](https://github.com/dotnet/docs/actions/workflows/version-sweep.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/version-sweep.yml):  Runs monthly, creating issues on projects that target .NET versions that are out of support.
 - [![Update dependabot.yml](https://github.com/dotnet/docs/actions/workflows/dependabot-bot.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/dependabot-bot.yml):  Automatically updates the `dependabot` configuration weekly, but only if required.
 - [![quest import](https://github.com/dotnet/docs/actions/workflows/quest.yml/badge.svg)](https://github.com/dotnet/docs/actions/workflows/quest.yml): Automatically synchronizes issues with Quest (Azure DevOps).