[evince] help: Synchronize repetitive strings. Less work for translators.

[Andre Klapper <aklapper src gnome org>]

commit 88f289ed186ed367825d47d76b338a922bbc5cec
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Mar 15 17:03:11 2019 +0100

    help: Synchronize repetitive strings. Less work for translators.

 help/C/duplex-9pages.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/C/duplex-9pages.page b/help/C/duplex-9pages.page
index c71f38fb..b5175f48 100644
--- a/help/C/duplex-9pages.page
+++ b/help/C/duplex-9pages.page
@@ -113,7 +113,7 @@
    Press the menu button in the top-right corner of the window and press the <gui style="button">Print</gui> 
button.
   </p>
  <p>
- In the <gui>General</gui> tab enter pages 4,9 in the <gui>Pages</gui> selection.
+ In the <gui>General</gui> tab enter pages 4, 9 in the <gui>Pages</gui> selection.
 </p>
 <p>
  Choose the <gui>Page Setup</gui> tab.