[nautilus-python] Add gtkdoc item to NEWS

[Adam Plumb <adamplumb src gnome org>]

commit 285bdc4989be69839fc6e719f47d34c1c6a5a259
Author: Adam Plumb <adamplumb gmail com>
Date:   Tue Jan 2 11:31:28 2018 -0500

    Add gtkdoc item to NEWS

 NEWS |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index b4c9569..b80b2f7 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,7 @@
     - Added capability to compile with python 3 support using PYTHON environment variable
     - Fix #781232, Improve extension path loading semantics to follow XDG recommendations
     - Fix #791208, require Nautilus 3.0 before importing extensions to prevent warnings
+    - Switch to using gtkdoc mkhtml for generating devhelp2 documentation
 
 1.1:
     - Added pygobject3 compatibility.  Retained pygobject 2.28.x compatibility.