[gnome-boxes] preferences, resources: Add Translation comment for recommended row

[Felipe Borges <felipeborges src gnome org>]

commit 260b252659e869bc082e527b6db1de8ec914ac75
Author: Felipe Borges <felipeborges gnome org>
Date:   Fri Dec 17 13:46:55 2021 +0100

    preferences, resources: Add Translation comment for recommended row

 src/preferences/resources-page.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/preferences/resources-page.vala b/src/preferences/resources-page.vala
index a3360c8e..5c886bf5 100644
--- a/src/preferences/resources-page.vala
+++ b/src/preferences/resources-page.vala
@@ -77,6 +77,7 @@ private async void mark_recommended_resources () {
         var architecture = machine.domain_config.get_os ().get_arch ();
         var recommended_resources = OSDatabase.get_recommended_resources_for_os (os, architecture);
         if (recommended_resources != null) {
+            // Translators: %s is a recommended value for RAM/storage limit. For example "Recommended 4 GB."
             var row_subtitle = _("Recommended %s.");
 
             ram_row.set_subtitle (row_subtitle.printf (GLib.format_size (recommended_resources.ram)));