[openSUSE/obs-build] 4464ce: docu: improve the ccache enable line

Branch: refs/heads/master Home: https://github.com/openSUSE/obs-build Commit: 4464ce3dc45f74f7bf2495d1e7fc5e3d9b9e7ce6 https://github.com/openSUSE/obs-build/commit/4464ce3dc45f74f7bf2495d1e7fc5e3... Author: Adrian Schröter Date: 2022-04-01 (Fri, 01 Apr 2022) Changed paths: M docs/build_config.adoc Log Message: ----------- docu: improve the ccache enable line To have ccache actually also installed.