[geary] Update print cc and bcc header label names to match others

[Michael Gratton <mjog src gnome org>]

commit 8b7e0ef6d82f8cf38dac164a05fbd44b5bb1cdc0
Author: Michael Gratton <mike vee net>
Date:   Sun Sep 30 23:35:57 2018 +1000

    Update print cc and bcc header label names to match others

 src/client/conversation-viewer/conversation-email.vala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/client/conversation-viewer/conversation-email.vala 
b/src/client/conversation-viewer/conversation-email.vala
index 5fdd75e1..fa940841 100644
--- a/src/client/conversation-viewer/conversation-email.vala
+++ b/src/client/conversation-viewer/conversation-email.vala
@@ -816,11 +816,11 @@ public class ConversationEmail : Gtk.Box, Geary.BaseInterface {
             builder.add_string_value(this.email.to.to_string());
         }
         if (this.email.cc != null) {
-            builder.set_member_name(_("CC:"));
+            builder.set_member_name(_("Cc:"));
             builder.add_string_value(this.email.cc.to_string());
         }
         if (this.email.bcc != null) {
-            builder.set_member_name(_("BCC:"));
+            builder.set_member_name(_("Bcc:"));
             builder.add_string_value(this.email.bcc.to_string());
         }
         if (this.email.date != null) {