build: DownloadWebRtc: Fix newlines

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

buildSrc/build.gradle

@@ -19,4 +19,4 @@
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
-apply plugin: 'groovy'
+apply plugin: 'groovy'

buildSrc/src/main/groovy/com/nextcloud/talk/gradle/DownloadWebRtcTask.groovy

@@ -64,4 +64,4 @@ abstract class DownloadWebRtcTask extends DefaultTask {
             }
         }
     }
-}
+}