Update README.md

A one liner explanation about GFS2.

README.md

@@ -2,7 +2,7 @@
 
 [![ansible-lint.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/ansible-lint.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/ansible-lint.yml) [![ansible-test.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/ansible-test.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/ansible-test.yml) [![codeql.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/codeql.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/codeql.yml) [![markdownlint.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/markdownlint.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/markdownlint.yml) [![python-unit-test.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/python-unit-test.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/python-unit-test.yml) [![shellcheck.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/shellcheck.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/shellcheck.yml) [![woke.yml](https://github.com/linux-system-roles/gfs2/actions/workflows/woke.yml/badge.svg)](https://github.com/linux-system-roles/gfs2/actions/workflows/woke.yml)
 
-Configure and manage gfs2 file systems in a pacemaker cluster.
+Configure and manage the Global File System 2 (gfs2), a cluster file system in a pacemaker cluster.
 
 ## Supported Distributions