Correct description in messages; add 'tel' input type

go-back-with-backspace/_locales/en/messages.json

Index: go-back-with-backspace/_locales/en/messages.json
diff --git a/go-back-with-backspace/_locales/en/messages.json b/go-back-with-backspace/_locales/en/messages.json
index 6fdb719e908d010d24560c3fa69f766c44633e9e..92dfd7b76fe00d6cad7039dac38e44fea5549cea 100644
--- a/go-back-with-backspace/_locales/en/messages.json
+++ b/go-back-with-backspace/_locales/en/messages.json
@@ -4,7 +4,7 @@
     "description": "Name of this extension."
   },
   "extensionDescription": {
-    "message": "Restores backspace as a back button.",
+    "message": "Re-enables the backspace key as a back navigation button (except when writing text).",
     "description": "Brief description of this extension."
   }
 }