Update blog url

roles/netbootxyz/templates/menu/about.ipxe.j2

@@ -20,7 +20,7 @@ menu ${fg_cya}${bold}About netboot.xyz (Version: ${version})
 item exit ${bold}Exit back to main menu...${boldoff}
 item --gap --  --------------------------------------------------------------------------
 item about ${fg_gre}${bold}Self Hosting and Live Booting - November 29, 2019
-item about ${fg_gre}${bold}Full Article: ${fg_whi}${bold}https://blog.netboot.xyz
+item about ${fg_gre}${bold}Full Article: ${fg_whi}${bold}https://netboot.xyz/blog/
 item about
 item about ${fg_yel}${bold}* Self hosting options using Ansible and Docker (soon)
 item about ${fg_yel}${bold}* Live Boot options now available with more on the way