Match with updated documentation

Source commit: 38d8342e92bfb4403c880b58c3d0154121506eb0

source/forms/SiteAdvanced.dfm

@@ -2206,7 +2206,7 @@ object SiteAdvancedDialog: TSiteAdvancedDialog
             Width = 353
             Height = 17
             Anchors = [akLeft, akTop, akRight]
-            Caption = 'Respond with pass&word to the first prompt'
+            Caption = 'Respond with a pass&word to the first prompt'
             TabOrder = 2
             OnClick = DataChange
           end