set date in manpage

scroll.1

@@ -13,7 +13,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate$
+.Dd April 9, 2020
 .Dt SCROLL 1
 .Os
 .Sh NAME