[glade] Add translators comments to remove ambiguity about tab string

[Juan Pablo Ugarte <jpu src gnome org>]

commit f1a5e99726133e1fcf92b21c66282502435f51f9
Author: Thibault Martin <mail thibaultmart in>
Date:   Thu Aug 13 10:51:59 2020 +0200

    Add translators comments to remove ambiguity about tab string

 plugins/webkit2gtk/webkit2gtk.xml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/plugins/webkit2gtk/webkit2gtk.xml b/plugins/webkit2gtk/webkit2gtk.xml
index 5c3c2443..b48c607c 100644
--- a/plugins/webkit2gtk/webkit2gtk.xml
+++ b/plugins/webkit2gtk/webkit2gtk.xml
@@ -28,6 +28,7 @@
             <!-- WebKitAutomationBrowsingContextPresentation enumeration value -->
             <value id="WEBKIT_AUTOMATION_BROWSING_CONTEXT_PRESENTATION_WINDOW" name="Window"/>
             <!-- WebKitAutomationBrowsingContextPresentation enumeration value -->
+           <!-- Translators: This is the meaning of "browser tab", not tabulation -->
             <value id="WEBKIT_AUTOMATION_BROWSING_CONTEXT_PRESENTATION_TAB" name="Tab"/>
             </displayable-values>
         </property>