updated README

Author: ricky641

README.md

@@ -26,7 +26,7 @@ A custom TextField with a switchable icon which shows or hides the password and
 #### Swift Package Manager (SPM)
 
 1. In Xcode 11+ select *File > Packages > Add Package Dependency...*.
-2. Enter this project's URL: https://github.com/PiXeL16/PasswordTextField
+2. Enter this project's URL: https://github.com/PiXeL16/PasswordTextField.git
 
 #### CocoaPods
 You can use [CocoaPods](http://cocoapods.org/) to install `PasswordTextField` by adding it to your `Podfile`: