Fix typo in README.md (#4912)

README.md

@@ -75,7 +75,7 @@ To run tests, open the HLSL Console and run this command after a successful buil
 
     hcttest
 
-Some tests will run shaders and verify their behavior. These tests also involve a driver that can run these execute these shaders. See the next section on how this should be currently set up.
+Some tests will run shaders and verify their behavior. These tests also involve a driver that can execute these shaders. See the next section on how this should be currently set up.
 
 ## Running Shaders