Add straggling Test

Author: aozgaa

tests/cases/fourslash/codeFixUnImplementedInterfaceTypeParamOnProperty.ts

@@ -1,12 +1,12 @@
 /// <reference path='fourslash.ts' />
 
 //// interface I {
-////     f1<T extends number>();
+////     f<T extends number>();
 //// }
 ////
 //// class C implements I {[| |]}
 
-verify.rangeAfterCodeFix(`f1<T extends number>(){
+verify.rangeAfterCodeFix(`f<T extends number>(){
     throw new Error('Method not Implemented');
 }
-`);
+`);