rename script cloud-backup -> backup-cloud

doc/backup-cloud.md

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+Upload backup to Mikrotik cloud
+===============================
+
+[◀ Go back to main README](../README.md)
+
+🛈 This script can not be used on its own but requires the base installation.
+See [main README](../README.md) for details.
+
+Description
+-----------
+
+This script uploads [binary backup to Mikrotik cloud](https://wiki.mikrotik.com/wiki/Manual:IP/Cloud#Backup).
+
+### Sample notification
+
+![backup-cloud notification](backup-cloud.d/notification.svg)
+
+Requirements and installation
+-----------------------------
+
+Just install the script:
+
+    $ScriptInstallUpdate backup-cloud;
+
+Configuration
+-------------
+
+The configuration goes to `global-config-overlay`, these are the parameters:
+
+* `BackupPassword`: password to encrypt the backup with
+* `BackupRandomDelay`: delay up to amount of seconds when run from scheduler
+
+Also notification settings are required for e-mail, matrix and/or telegram.
+
+Usage and invocation
+--------------------
+
+Just run the script:
+
+    / system script run backup-cloud;
+
+Creating a scheduler may be an option:
+
+    / system scheduler add interval=1w name=backup-cloud on-event="/ system script run backup-cloud;" start-time=09:20:00;
+
+See also
+--------
+
+* [Send backup via e-mail](email-backup.md)
+* [Upload backup to server](upload-backup.md)
+
+---
+[◀ Go back to main README](../README.md)  
+[▲ Go back to top](#top)