[gimp] NEWS: a/aan rgument/an argument/.

[Jehan Pagès <jehanp src gnome org>]

commit c9913bc1e7ef8f0b5d50472abaa6a73289dbfc23
Author: Jehan <jehan girinstud io>
Date:   Wed Dec 13 17:45:42 2017 +0100

    NEWS: a/aan rgument/an argument/.
    
    A little late for this small typo, but let's still fix it.

 NEWS |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index cfe108e..fd12622 100644
--- a/NEWS
+++ b/NEWS
@@ -138,7 +138,7 @@ PDB:
 
   - Add file-pdf-load2 API to load password-protected and/or multi-page
     PDF files.
-  - Add file-hgt-load to load HGT files, with aan rgument to select between
+  - Add file-hgt-load to load HGT files, with an argument to select between
     SRTM-1 and SRTM-3 types.
 
 Translations: