[gimp-web/testing] Add smart colorization research paper link in GIMP 2.10.10 news.

[Jehan <jehanp src gnome org>]

commit 9ee0868f3d227262e59b5645ba35304a90036cfd
Author: Jehan <jehan girinstud io>
Date:   Tue Mar 19 13:46:29 2019 +0100

    Add smart colorization research paper link in GIMP 2.10.10 news.

 content/news/2019-03_GIMP-2.10.10_Released/index.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/content/news/2019-03_GIMP-2.10.10_Released/index.md 
b/content/news/2019-03_GIMP-2.10.10_Released/index.md
index 70bd0143..e63fa923 100644
--- a/content/news/2019-03_GIMP-2.10.10_Released/index.md
+++ b/content/news/2019-03_GIMP-2.10.10_Released/index.md
@@ -42,7 +42,8 @@ trying to leave no unfilled pixels near the lines, and closing potential
 zones.
 
 This feature, originated from the [G'MIC](https://gmic.eu/) plug-in as a
-research paper, was contributed by Jehan as a work of the
+[research paper](https://hal.archives-ouvertes.fr/hal-01891876), was
+contributed by Jehan as a work of the
 [IMAGE](https://www.greyc.fr/?page_id=443&lang=en) team of the
 [GREYC](https://www.greyc.fr/?page_id=1342&lang=en)
 laboratory (French Research Lab, affiliated to the