docs: add OpenSSF Best Practices registration badge

Author: hyperpolymath

README.adoc

@@ -1,7 +1,10 @@
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 = 🔒 SafeBruteForce
+image:https://img.shields.io/badge/OpenSSF-Best_Practices-green?logo=openssourcesecurity[OpenSSF Best Practices,link="https://www.bestpractices.dev/en/projects/new?repo_url=https://github.com/hyperpolymath/safe-brute-force"]
 
-image:https://img.shields.io/badge/License-PMPL--1.0-blue.svg[License: PMPL-1.0,link="https://github.com/hyperpolymath/palimpsest-license"]
-// SPDX-License-Identifier: MPL-2.0
+
+image:https://img.shields.io/badge/License-MPL_2.0-blue.svg[License: MPL-2.0,link="https://opensource.org/licenses/MPL-2.0"]
 // SPDX-FileCopyrightText: 2025 Jonathan D.A. Jewell
 
 [![RSR Compliance](https://img.shields.io/badge/RSR-Bronze-cd7f32)](RSR_COMPLIANCE.md)
@@ -425,5 +428,6 @@ This project maintains the principle of *"Safety First"*:
 
 == License
 
-Palimpsest License (PMPL-1.0)
-2025 Jonathan D.A. Jewell
+This project is licensed under the Mozilla Public License, v. 2.0. See the `LICENSE` file for details.
+
+SPDX-License-Identifier: MPL-2.0