Spelling mistake in email-link authentication alert box

[tndttan]

Step 2: Describe your environment

• Objective C or Swift: Swift
• iOS version: 12.1
• Firebase SDK version: 5.14.0
• FirebaseUI version: 6.1.1
• CocoaPods Version: 1.5.3

Step 3: Describe the problem:

Spelling mistake in 'Sign-in email Sent' alert box, where 'instrucitons' should be 'instructions'.

Steps to reproduce:

1. Choose email-link authentication
2. Provide an email and tap 'Next'

[Yue-Wang-Google]

I'll just take it