[goobox/wip/piotrdrag/unicode-typography: 8/8] Fix a few capitalization issues in translatable strings

[Paolo Bacchilega <paobac src gnome org>]

commit 5cfb74ff0ef9f2d966d5f97b8d632f8134edcd8c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Aug 19 20:20:31 2018 +0200

    Fix a few capitalization issues in translatable strings

 data/appdata/org.gnome.Goobox.appdata.xml.in | 4 ++--
 src/goo-application.c                        | 2 +-
 src/gtk-utils.h                              | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/data/appdata/org.gnome.Goobox.appdata.xml.in b/data/appdata/org.gnome.Goobox.appdata.xml.in
index 7ea94e7..1b6980d 100644
--- a/data/appdata/org.gnome.Goobox.appdata.xml.in
+++ b/data/appdata/org.gnome.Goobox.appdata.xml.in
@@ -9,8 +9,8 @@
   <summary>Play and extract CDs</summary>
   <description>
     <p>
-      Goobox allows you to play CDs and save the tracks to disk as mp3, ogg,
-      flac or wav files.
+      Goobox allows you to play CDs and save the tracks to disk as MP3, Ogg,
+      FLAC or WAV files.
     </p>
     <p>
       Track titles and CD covers are set automatically using the
diff --git a/src/goo-application.c b/src/goo-application.c
index 93587bd..06a415f 100644
--- a/src/goo-application.c
+++ b/src/goo-application.c
@@ -200,7 +200,7 @@ goo_application_command_line (GApplication            *application,
                                             0,
                                             _GTK_ICON_NAME_DIALOG_ERROR,
                                             _("Cannot start the CD player"),
-                                            _("In order to read CDs you have to install the gstreamer base 
plugins"),
+                                            _("In order to read CDs you have to install the GStreamer base 
plugins"),
                                             _GTK_LABEL_OK, GTK_RESPONSE_OK,
                                             NULL);
                g_signal_connect_swapped (G_OBJECT (d), "response",
diff --git a/src/gtk-utils.h b/src/gtk-utils.h
index 0538917..de90bd5 100644
--- a/src/gtk-utils.h
+++ b/src/gtk-utils.h
@@ -35,7 +35,7 @@ G_BEGIN_DECLS
 
 #define _GTK_LABEL_CANCEL _("_Cancel")
 #define _GTK_LABEL_CLOSE _("_Close")
-#define _GTK_LABEL_OK _("_Ok")
+#define _GTK_LABEL_OK _("_OK")
 #define _GTK_LABEL_OPEN _("_Open")
 #define _GTK_LABEL_RESET _("_Reset")