Cross-reference style(9) and style.mdoc(5)

Suggested by:	yuripv
MFC after:	3 days

share/man/man5/style.mdoc.5

@@ -26,7 +26,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 10, 2019
+.Dd June 30, 2020
 .Dt STYLE.MDOC 5
 .Os
 .Sh NAME
@@ -242,7 +242,8 @@ that would be rendered as:
 .Sh SEE ALSO
 .Xr man 1 ,
 .Xr mandoc 1 ,
-.Xr mdoc 7
+.Xr mdoc 7 ,
+.Xr style 9
 .Sh HISTORY
 This manual page first appeared in
 .Fx 13.0 .

share/man/man9/style.9

@@ -25,7 +25,7 @@
 .\"	From: @(#)style	1.14 (Berkeley) 4/28/95
 .\" $FreeBSD$
 .\"
-.Dd January 10, 2020
+.Dd June 30, 2020
 .Dt STYLE 9
 .Os
 .Sh NAME
@@ -916,6 +916,7 @@ indentation rules.
 .Xr err 3 ,
 .Xr warn 3 ,
 .Xr style.Makefile 5 ,
+.Xr style.mdoc 5 ,
 .Xr style.lua 9
 .Sh HISTORY
 This manual page is largely based on the