[epiphany] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 7182c79fb216e04f4d4980049b93e39d312f885a
Author: Jordi Mas <jmas softcatala org>
Date:   Sun Apr 7 19:40:44 2019 +0200

    Update Catalan translation

 po/ca.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/ca.po b/po/ca.po
index c6109868d..489efb275 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -1403,7 +1403,7 @@ msgid ""
 "Heads-up: this form is not secure. If you type your password, it will not be "
 "kept private."
 msgstr ""
-"Man en l'aire!!: aquest formulari no és segur. Si escriviu la contrasenya, "
+"Atenció: aquest formulari no és segur. Si escriviu la contrasenya, "
 "no es mantindrà privada."
 
 #: embed/ephy-web-view.c:1153