remove dash

docs/pages/Docker-Virtualisation.md

 <!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <!-- SPDX-FileCopyrightText: Copyright © VirtualFluids Project contributors, see AUTHORS.md in root folder -->
 
-# Docker-Virtualisation
+# Docker Virtualisation
 
 The development environment for VirtualFluids is based on Docker. Docker is a tool that allows you to run applications in containers. A container is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries, and settings.