fix(docs): adjust command for transferring backup data (#435)

Author: JacobCoffee

docs/guides/migration-recipe.md

@@ -163,7 +163,7 @@ index 68387c9..7a8ace1 100644
 5.  If the service has pillar data for backups (see `pillar/prod/backup/$service.sls`), 
     run `rsync` once to move the bulk of data and as necessary to watch for changes:
     ```console
-    sudo -E -s rsync -av --rsync-path="sudo rsync" username@hostname: /pathname/ /pathname/
+    sudo -E -s rsync -av --rsync-path="sudo rsync" username@hostname:/pathname/ /pathname/
     ```
     - The `/pathname/` can be determined by looking at the pillar data for backups, `pillar/prod/backup` using the 
       `source_directory` path for the given host (example: the `downloads` host uses `/srv/`)
@@ -188,7 +188,7 @@ index 68387c9..7a8ace1 100644
 1. If the service has pillar data for backups (see `pillar/prod/backup/$service.sls`), 
     run `rsync` once more to finalize data migration:
     ```console
-    sudo -E -s rsync -av --rsync-path="sudo rsync" username@hostname: /pathname/ /pathname/
+    sudo -E -s rsync -av --rsync-path="sudo rsync" username@hostname:/pathname/ /pathname/
     ```
 2.  Start cron jobs:
     ```console