Fix SPM package link

Author: shivathapaa

README.md

@@ -185,7 +185,7 @@ To integrate this library into your iOS project using Swift Package Manager(SPM)
 
 - Go to Xcode -> File -> Add package dependencies -> Paste below url for package -> Add package -> Done
 
-- Add the library using Package.swift from repo - https://github.com/shivathapaa/Nepali-Date-Picker-SPM/tree/main (After adding you are good to go!)
+- Add the library using Package.swift from repo - https://github.com/shivathapaa/Nepali-Date-Picker-SPM (After adding you are good to go!)
 
 ```swift
 import SwiftUI