🐛 Fix incremental backup link-dest path

Update relative path for incremental backups

Modify the --link-dest argument in the rsync command to use
"../latest" instead of "../{HOSTNAME}/latest". This change
ensures correct reference to the previous backup for
incremental backups, fixing potential issues with hardlinking.

aeonsync/backup.py

@@ -75,7 +75,7 @@ def _build_rsync_extra_args(self) -> List[str]:
         for exclusion in EXCLUSIONS:
             extra_args.extend(["--exclude", exclusion])
         if not self.config.full:
-            extra_args.extend(["--link-dest", f"../{HOSTNAME}/latest"])
+            extra_args.extend(["--link-dest", "../latest"])
         if self.config.dry_run:
             extra_args.append("--dry-run")
         if self.config.verbose: