[gnome-boxes] help: Replace references to new button with +

[Felipe Borges <felipeborges src gnome org>]

commit 222f5b09ee5bd97a4eb7ac4f6c9af1bd5410354e
Author: Monika Grabovska <monika grabovska gmail com>
Date:   Thu Jun 25 00:10:54 2020 +0200

    help: Replace references to new button with +

 help/C/connect.page | 2 +-
 help/C/create.page  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/connect.page b/help/C/connect.page
index 6f2dcc93..77d4b6b3 100644
--- a/help/C/connect.page
+++ b/help/C/connect.page
@@ -27,7 +27,7 @@
   </note>
 
   <steps>
-    <item><p>Click <gui style="button">New</gui> in the top left corner to launch
+    <item><p>Click <gui style="button">+</gui> in the top left corner to launch
     the box creation wizard.</p></item>
     <item><p>At the wizard's <gui>Source Selection</gui> screen, click
     <gui style="button">Enter URL</gui>.</p></item>
diff --git a/help/C/create.page b/help/C/create.page
index 2c2d33ac..19d05ca7 100644
--- a/help/C/create.page
+++ b/help/C/create.page
@@ -25,7 +25,7 @@
   message is displayed.</p>
 
   <steps>
-    <item><p>Click <gui style="button">New</gui> in the top left corner to launch
+    <item><p>Click <gui style="button">+</gui> in the top left corner to launch
     the box creation wizard.</p></item>
     <item><p>At the wizard's <gui>Source Selection</gui> screen, choose a source
     to determine the type of box you want to create. A local virtual machine