ci: Improve install-meson-project usage output

Most of the options require a parameter, indicate that in the
usage output.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3497>

diff --git a/.gitlab-ci/install-meson-project.sh b/.gitlab-ci/install-meson-project.sh
index 7750193414f2fec3ea1d050c4a812a883f1227f2..bcc67cf9efa19557190e5eed591f71cc98aed5c4 100755 (executable)
--- a/.gitlab-ci/install-meson-project.sh
+++ b/.gitlab-ci/install-meson-project.sh
@@ -9,13 +9,13 @@ usage() {
        Check out and install a meson project
 
        Options:
-         -Dkey=val      Option to pass on to meson
-         --subdir       Build subdirectory instead of whole project
-         --prepare      Script to run before build
-         --libdir       Setup the project with a different libdir
-         --destdir      Install the project to an additional destdir
+         -Dkey=val          Option to pass on to meson
+         --subdir=DIR       Build subdirectory instead of whole project
+         --prepare=SCRIPT   Script to run before build
+         --libdir=DIR       Setup the project with a different libdir
+         --destdir=DIR      Install the project to an additional destdir
 
-         -h, --help     Display this help
+         -h, --help         Display this help
 
        EOF
 }