Update mobile app instructions for accessing settings (viamrobotics#2612

)

Co-authored-by: Naomi Pentrel <[email protected]>

docs/fleet/rbac.md

@@ -52,9 +52,9 @@ The option to grant additional access is only visible if you can grant the user
 
 ### Use the mobile app
 
-You can also use the [Viam mobile app](/fleet/#the-viam-mobile-app) to grant or revoke org owner or operator access to users on the go.
-Navigate to **Home** on the mobile app, and select your organization.
-Click the gear icon in the upper right corner to access the mobile organization settings page.
+You can also use the [Viam mobile app](/fleet/#the-viam-mobile-app) to grant or revoke organization owner or operator access to users on the go.
+Navigate to your organizations on the mobile app by swiping left to right or clicking on the menu in the top left corner.
+Click the gear icon associated with the organization where you want to manage access or invite new people.
 
 ## API keys