Update event mode e-mail content

Author: younglim

public/electron/scanManager.js

@@ -420,7 +420,7 @@ const mailResults = async (formDetails, scanId) => {
     $mail.body = "Hi there,
     
 Please see the attached accessibility scan results with Oobee (report.html).
-You can download Oobee at the following link: https://go.gov.sg/get-purplea11y.
+You can download Oobee at the following link: https://go.gov.sg/oobee.
 
 Feel free to reach us at accessibility@tech.gov.sg if you have any questions.