!3 Update source url

From: @zzm_567
Reviewed-by: @orange-snn
Signed-off-by: @orange-snn

gv.spec

@@ -2,12 +2,12 @@
 
 Name: gv
 Version: 3.7.4
-Release: 19
+Release: 20
 Summary: gv is a Ghostscript PostScript interpreter by providing a graphical user interface
 License: GPLv3+
 
 URL: http://www.gnu.org/software/gv
-Source0: ftp://ftp.gnu.org/gnu/gv/gv-%{version}.tar.gz
+Source0: https://ftp.gnu.org/gnu/gv/gv-%{version}.tar.gz
 Source1: gv.png
 
 Requires: ghostscript-x11
@@ -111,6 +111,9 @@ fi
 
 
 %changelog
+* Tue Dec 15 2020 zhanzhimin <zhanzhimin@huawei.com> - 3.7.4-20
+- update source0
+
 * Thu Jan 9 2020 openEuler Buildteam <buildteam@openeuler.org> - 3.7.4-19
 - Type:enhancement
 - ID:NA