docs: spelling: server-side

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

backend/premiumizeme/premiumizeme.go

@@ -682,7 +682,7 @@ func (f *Fs) move(ctx context.Context, isFile bool, id, oldLeaf, newLeaf, oldDir
 	return nil
 }
 
-// Move src to this remote using server side move operations.
+// Move src to this remote using server-side move operations.
 //
 // This is stored with the remote path given
 //
@@ -718,7 +718,7 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 }
 
 // DirMove moves src, srcRemote to this remote at dstRemote
-// using server side move operations.
+// using server-side move operations.
 //
 // Will only be called if src.Fs().Name() == f.Name()
 //