More descriptive Wiki-link

Author: julienschmidt

README.md

@@ -160,7 +160,7 @@ However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` v
 
 
 ## Testing / Development
-To run the driver tests you may need to adjust the configuration. See [this Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details.
+To run the driver tests you may need to adjust the configuration. See the [Testing Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details.
 
 Go-MySQL-Driver is not feature-complete yet. Your help is very appreciated.
 If you want to contribute, you can work on an [open issue](https://github.com/go-sql-driver/mysql/issues?state=open) or review a [pull request](https://github.com/go-sql-driver/mysql/pulls).