Fix a few links

README-ubuntu1604.md

@@ -127,9 +127,9 @@ and additional information including the following files,
 are also available for download as gitlab CI
 [artifacts](https://gitlab.cern.ch/linuxsupport/rpms/HEP_OSlibs/builds/artifacts/7.2.14-1.xenial-testing/browse/build?job=deploy_job):
 - heposlibs recursive dependencies, as a tree (from `apt-rdepends`): <br/>
-  download [heposlibs.amd64.dependencies-recursive-tree.txt](https://gitlab.cern.ch/linuxsupport/rpms/HEP_OSlibs/builds/artifacts/7.2.14-1.xenial-testing/file/build/heposlibs.amd64.dependencies-recursive-tree.txt?job=deploy_job)
+  download [heposlibs.amd64.dependencies-recursive-tree.txt](https://gitlab.cern.ch/linuxsupport/rpms/HEP_OSlibs/builds/artifacts/7.2.14-1.xenial-testing/raw/build/heposlibs.amd64.dependencies-recursive-tree.txt?job=deploy_job)
 - heposlibs installation log: <br/>
-  download [heposlibs.amd64.installation-log.txt](https://gitlab.cern.ch/linuxsupport/rpms/HEP_OSlibs/builds/artifacts/7.2.14-1.xenial-testing/file/build/heposlibs.amd64.installation-log.txt?job=deploy_job)
+  download [heposlibs.amd64.installation-log.txt](https://gitlab.cern.ch/linuxsupport/rpms/HEP_OSlibs/builds/artifacts/7.2.14-1.xenial-testing/raw/build/heposlibs.amd64.installation-log.txt?job=deploy_job)
 
 ### Changelog
 
@@ -138,8 +138,8 @@ Read the changelog for release 7.2.14-1.xenial in the
 file.
 
 These are based on the upstream developments for CentOS7/el7
-(see [el7/README-el7.md](/../el7/README-el7.md#changelog)
-for the el7 changelog).
+(see [el7/README-el7.md](/../el7/README-el7.md)
+for the [el7 changelog](/../el7/README-el7.md#changelog)).
 
 ## Updates (for developers)