Fixed Odd Looking Link

Author: xaviex

docs/standard/base-types/best-practices.md

@@ -69,7 +69,7 @@ manager: "wpickett"
 
 -   When developing a pattern, you should consider how backtracking might affect the performance of the regular expression engine, particularly if your regular expression is designed to process unconstrained input. For more information, see the [Take Charge of Backtracking](#Backtracking) section.  
 
--   Thoroughly test your regular expression using invalid and near-valid input as well as valid input. To generate input for a particular regular expression randomly, you can use [Rex](https://www.microsoft.com/en-us/research/project/rex-regular-expression-exploration/?from=http%3A%2F%2Fresearch.microsoft.com%2Fen-us%2Fprojects%2Frex%2F), which is a regular expression exploration tool from Microsoft Research.  
+-   Thoroughly test your regular expression using invalid and near-valid input as well as valid input. To generate input for a particular regular expression randomly, you can use [Rex](https://www.microsoft.com/en-us/research/project/rex-regular-expression-exploration/), which is a regular expression exploration tool from Microsoft Research.  
 
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