Propagate lowercase everything from the Beman Standard to the entire org

Author: Darius Neațu

README.md

@@ -11,7 +11,7 @@ SPDX-License-Identifier: <SPDX License Expression>
 **Implements**: [`inplace_vector` (P0843R14)](https://wg21.link/P0843R14)
 
 **Status**:
-[Under development and not yet ready for production use.](https://github.com/bemanproject/beman/blob/main/docs/BEMAN_LIBRARY_MATURITY_MODEL.md#under-development-and-not-yet-ready-for-production-use)
+[Under development and not yet ready for production use.](https://github.com/bemanproject/beman/blob/main/docs/beman_library_maturity_model.md#under-development-and-not-yet-ready-for-production-use)
 
 ## Usage