axzshctl: Fix syntax of "set-theme" in help output

diff --git a/bin/axzshctl b/bin/axzshctl
index 5b3f4bd2d3704d06cddebc7a3ef9ac490204a0c2..7d85c4d01dd93c5eff3b3b7da408cfdc6f82a1ba 100755 (executable)
--- a/bin/axzshctl
+++ b/bin/axzshctl
@@ -55,7 +55,7 @@ function Usage {
        echo "  check-plugins"
        echo "    Detect plugins which are \"useful\" on this system."
        echo
-       echo "  set-theme <name>|-"
+       echo "  set-theme {<name>|-}"
        echo "    Set active theme to <name>, or to the default."
        echo
        echo "  upgrade"