doc/mkeficapsule.1: Update homepage link

The project home page is no longer the old wiki, but
https://www.u-boot.org/

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/doc/mkeficapsule.1 b/doc/mkeficapsule.1
index c3d0f21..eaaba2c 100644
--- a/doc/mkeficapsule.1
+++ b/doc/mkeficapsule.1
@@ -130,4 +130,4 @@
 Written by AKASHI Takahiro <takahiro.akashi@linaro.org>
 
 .SH HOMEPAGE
-http://www.denx.de/wiki/U-Boot/WebHome
+http://www.u-boot.org/