!4 Modify Source0 Url of package assimp

From: @wang--ge
Reviewed-by: @small_leek
Signed-off-by: @small_leek

assimp.spec

@@ -1,10 +1,10 @@
 Name:          assimp
 Version:       3.3.1
-Release:       18
+Release:       19
 Summary:       Library to load and process various 3D model formats into applications.
 License:       BSD and MIT
 URL:           http://assimp.sourceforge.net
-Source0:       assimp-%{version}-free.tar.xz
+Source0:       https://github.com/assimp/assimp/archive/v3.3.1.tar.gz
 Patch0001:     assimp-3.3.1-unbundle.patch
 Patch0002:     assimp-3.2.0-pythonpath.patch
 Patch0003:     0001-Assimp-cmake-provider-fix.patch
@@ -116,5 +116,8 @@ install -m 0644 port/PyAssimp/pyassimp/*.py %{buildroot}%{python3_sitelib}/pyass
 %{python3_sitelib}/pyassimp
 
 %changelog
+* Wed Sep 9 2020 Ge Wang <wangge20@huawei.com> - 3.3.1-19
+- Modify Source0 Url
+
 * Fri Feb 14 2020 likexin <likexin4@huawei.com> - 3.3.1-18
 - Package init