update tests link in readme

Author: paul42

Readme.md

@@ -389,7 +389,7 @@ Dapper has no DB specific implementation details, it works across all .NET ADO p
 
 Do you have a comprehensive list of examples?
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-Dapper has a comprehensive test suite in the [test project](https://github.com/StackExchange/Dapper/tree/main/Dapper.Tests).
+Dapper has a comprehensive test suite in the [test project](https://github.com/StackExchange/Dapper/tree/main/tests/Dapper.Tests).
 
 Who is using this?
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