Adapted namespace and module name of NonStringArgs tests to the new location

Author: Martin521

tests/FSharp.Compiler.ComponentTests/CompilerDirectives/NonStringArgs.fs

@@ -1,10 +1,10 @@
 // Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
-namespace ErrorMessages
+namespace CompilerDirectives
 
 open Xunit
 open FSharp.Test.Compiler
 
-module HashDirectives =
+module NonStringArgs =
 
     [<InlineData("8.0")>]
     [<InlineData("9.0")>]