fix typos

web/static/i18n/en.json

@@ -1210,10 +1210,10 @@
   "user.settings.notification.allActivity": "For all activity",
   "user.settings.notifications.onlyMentions": "Only for mentions and direct messages",
   "user.settings.notifications.never": "Never",
-  "user.settings.notifications.info": "Desktop notification are available on Firefox, Safari, Chrome, Internet Explorer, and Edge.",
+  "user.settings.notifications.info": "Desktop notifications are available on Firefox, Safari, Chrome, Internet Explorer, and Edge.",
   "user.settings.notifications.on": "On",
   "user.settings.notifications.off": "Off",
-  "user.settings.notifications.sounds_info": "Desktop notification sounds are available on Firefox, Safari, Chrome, Internet Explorer, and Edge.",
+  "user.settings.notifications.sounds_info": "Desktop notifications sounds are available on Firefox, Safari, Chrome, Internet Explorer, and Edge.",
   "user.settings.notification.soundConfig": "Please configure notification sounds in your browser settings",
   "user.settings.notifications.emailInfo": "Email notifications are sent for mentions and direct messages after you’ve been offline for more than 60 seconds or away from {siteName} for more than 5 minutes.",
   "user.settings.notifications.sensitiveName": "Your case sensitive first name \"{first_name}\"",