[gbrainy] Fix broken markup in Greek UI translation

[Andre Klapper <aklapper src gnome org>]

commit ed19721687409189999322dd6a32c90ec60e9658
Author: Andre Klapper <a9016009 gmx de>
Date:   Tue Mar 3 05:45:37 2020 +0100

    Fix broken markup in Greek UI translation

 po/el.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/el.po b/po/el.po
index e0059f42..25bcf2b6 100644
--- a/po/el.po
+++ b/po/el.po
@@ -2898,7 +2898,7 @@ msgstr "Σελίδες ανά πλευρά:"
 
 #: ../src/Clients/Classical/Dialogs/ui/PdfExportDialog.ui.h:18
 msgid "<b>Output File</b>"
-msgstr "<b> αρχείου εξόδου </ b>"
+msgstr "<b> αρχείου εξόδου </b>"
 
 #: ../src/Clients/Classical/Dialogs/ui/PlayerHistoryDialog.ui.h:1
 #: ../src/Clients/Classical/gbrainy.ui.h:19