rl-1509.xml: Gnome -> GNOME

+1 -1
+1 -1
nixos/doc/manual/release-notes/rl-1509.xml
··· 57 57 </listitem> 58 58 59 59 <listitem> 60 - <para>Gnome has been upgraded to 3.16. 60 + <para>GNOME has been upgraded to 3.16. 61 61 </para> 62 62 </listitem> 63 63