[library-web/oscp] Install gnome-doc-utils for xml2po

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit a14260008f8195c3d8095eadb4f4f942ff6abd77
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Tue Mar 10 15:26:06 2020 +0100

    Install gnome-doc-utils for xml2po

 lgo/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/lgo/Dockerfile b/lgo/Dockerfile
index ea4d8e8..69789dd 100644
--- a/lgo/Dockerfile
+++ b/lgo/Dockerfile
@@ -2,7 +2,7 @@ FROM centos:7
 
 RUN yum install -y epel-release gnome-common glib2-devel intltool docbook-dtds \
         docbook-style-xsl gtk-doc python-sqlite2 yelp-tools libxslt make git \
-        gnome-doc-utils-stylesheets httpd && \
+        gnome-doc-utils gnome-doc-utils-stylesheets httpd && \
     yum install -y python-html5lib && \
     yum -y clean all --enablerepo='*'