Address code review : add test case for inside ambient module declaration and single quote

Author: Yui T

tests/cases/fourslash/completionListWithAmbientDeclaration.ts

@@ -2,8 +2,14 @@
 
 //// declare module "http" {
 ////    var x;
+////    /*1*/
 //// }
-//// /**/
+//// declare module 'https' {
+//// }
+//// /*2*/
 
-goTo.marker();
+goTo.marker("1");
+verify.not.completionListContains("http");
+goTo.marker("2");
 verify.not.completionListContains("http");
+verify.not.completionListContains("https");