Update Position help text in Account Settings (#4885)

webapp/components/user_settings/user_settings_general.jsx

@@ -1010,7 +1010,7 @@ class UserSettingsGeneralTab extends React.Component {
                     <span>
                         <FormattedMessage
                             id='user.settings.general.positionExtra'
-                            defaultMessage='Tell your teammates what you do.'
+                            defaultMessage='Use Position for your role or job title. This will be shown in your profile popover.'
                         />
                     </span>
                 );

webapp/i18n/en.json

@@ -1999,7 +1999,7 @@
   "user.settings.general.notificationsExtra": "By default, you will receive mention notifications when someone types your first name. Go to {notify} settings to change this default.",
   "user.settings.general.notificationsLink": "Notifications",
   "user.settings.general.position": "Position",
-  "user.settings.general.positionExtra": "Tell your teammates what you do.",
+  "user.settings.general.positionExtra": "Use Position for your role or job title. This will be shown in your profile popover.",
   "user.settings.general.primaryEmail": "Primary Email",
   "user.settings.general.profilePicture": "Profile Picture",
   "user.settings.general.title": "General Settings",