fix the link from beman-standard.md to BEMAN_STANDARD.md

README.md

@@ -6,7 +6,7 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 ![Continuous Integration Tests](https://github.com/beman-project/exemplar/actions/workflows/ci_tests.yml/badge.svg)
 
-`beman.exemplar` is a minimal C++ library conforming to [The Beman Standard](https://github.com/beman-project/beman/blob/main/docs/beman-standard.md).
+`beman.exemplar` is a minimal C++ library conforming to [The Beman Standard](https://github.com/beman-project/beman/blob/main/docs/BEMAN_STANDARD.md).
 This can be used as a template for those intending to write Beman libraries.
 It may also find use as a minimal and modern  C++ project structure.