Fix typo in type name

src/harness/harnessLanguageService.ts

@@ -109,7 +109,7 @@ module Harness.LanguageService {
         }
 
         public isCancellationRequested() {
-            return this.cancellationToken && this.cancellationToken.isCancellationRequested();
+            return this.cancellationToken && this.cancellationToken.isCancellationRequested();
         }
     }
 
@@ -210,7 +210,7 @@ module Harness.LanguageService {
             return script ? script.version.toString() : undefined;
         }
         log(s: string): void { }
-        trace(s: string): void { }
+        trace(s: string): void { }
         error(s: string): void { }
     }
 
@@ -391,7 +391,7 @@ module Harness.LanguageService {
         }
         getSourceFile(filename: string): ts.SourceFile {
             throw new Error("SourceFile can not be marshalled accross the shim layer.");
-        }
+        }
         dispose(): void { this.shim.dispose({}); }
     }