- address outdated infomation regarding memory limits for amd64 in faq

PR:		196997
Differential Revision:	https://reviews.freebsd.org/D1731
Reported by:	ports@toco-domains.de
Approved by:	bcr (mentor)

en_US.ISO8859-1/books/faq/book.xml

@@ -46,6 +46,8 @@
       <year>2012</year>
       <year>2013</year>
       <year>2014</year>
+      <year>2015</year>
+
       <holder>The &os; Documentation Project</holder>
     </copyright>
 
@@ -1496,9 +1498,8 @@
 	      without <acronym>PAE</acronym> supports at most
 	      4&nbsp;GB of memory (and usually less than that because
 	      of PCI address space) and &i386; with PAE supports at
-	      most 64&nbsp;GB memory.  AMD64 platforms currently
-	      deployed support up to 1&nbsp;TB of physical
-	      memory.</para>
+	      most 64&nbsp;GB memory.  As of &os;&nbsp;10, AMD64
+	      platforms support up to 4&nbsp;TB of physical memory.</para>
 	  </answer>
 	</qandaentry>