man: Add missing comma in .Dd for tree(3) Reported-by: Thorsten Glaser <tg@mirbsd.de>
diff --git a/man/tree.3bsd b/man/tree.3bsd
index 9433394..aa8a724 100644
--- a/man/tree.3bsd
+++ b/man/tree.3bsd
@@ -23,7 +23,7 @@
.\" * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\" */
-.Dd May 10 2019
+.Dd May 10, 2019
.Dt TREE 3bsd
.Os
.Sh NAME