Fix samples link

dev branch was missing, change to main instead

Author: epelc

README.md

@@ -6,7 +6,7 @@ The latest code resides in the `dev` branch.
 
 Quick links:
 
-| [Getting Started](https://docs.microsoft.com/azure/active-directory/develop/#quickstarts) | [GoDoc](https://pkg.go.dev/github.com/AzureAD/microsoft-authentication-library-for-go/apps) | [Wiki](https://github.com/AzureAD/microsoft-authentication-library-for-go/wiki) | [Samples](https://github.com/AzureAD/microsoft-authentication-library-for-go/tree/dev/apps/tests/devapps) | [Support](README.md#community-help-and-support) | [Feedback](https://forms.office.com/r/s4waBAytFJ) |
+| [Getting Started](https://docs.microsoft.com/azure/active-directory/develop/#quickstarts) | [GoDoc](https://pkg.go.dev/github.com/AzureAD/microsoft-authentication-library-for-go/apps) | [Wiki](https://github.com/AzureAD/microsoft-authentication-library-for-go/wiki) | [Samples](https://github.com/AzureAD/microsoft-authentication-library-for-go/tree/main/apps/tests/devapps) | [Support](README.md#community-help-and-support) | [Feedback](https://forms.office.com/r/s4waBAytFJ) |
 | ------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------- |
 
 ## Build Status