F-Droid Conf fixes, gradlew sha256 added

gradle/wrapper/gradle-wrapper.properties

@@ -1,21 +1,6 @@
-#
-#  * Copyright (c)  2021  Shabinder Singh
-#  * This program is free software: you can redistribute it and/or modify
-#  * it under the terms of the GNU General Public License as published by
-#  * the Free Software Foundation, either version 3 of the License, or
-#  * (at your option) any later version.
-#  *
-#  * This program is distributed in the hope that it will be useful,
-#  * but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  * GNU General Public License for more details.
-#  *
-#  *  You should have received a copy of the GNU General Public License
-#  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-#
-
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionSha256Sum=e2774e6fb77c43657decde25542dea710aafd78c4022d19b196e7e78d79d8c6c
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https://services.gradle.org/distributions/gradle-6.8-bin.zip