Fixes Microsoft/monaco-editor#799: Fix typo

src/monaco.contribution.ts

@@ -79,7 +79,7 @@ export class LanguageServiceDefaultsImpl implements monaco.languages.typescript.
 		this._onDidChange.fire(this);
 	}
 
-	setMaximunWorkerIdleTime(value: number): void {
+	setMaximumWorkerIdleTime(value: number): void {
 		// doesn't fire an event since no
 		// worker restart is required here
 		this._workerMaxIdleTime = value;

src/monaco.d.ts

@@ -135,7 +135,7 @@ declare module monaco.languages.typescript {
          * @param value The maximun idle time in milliseconds. Values less than one
          * mean never shut down.
          */
-        setMaximunWorkerIdleTime(value: number): void;
+        setMaximumWorkerIdleTime(value: number): void;
 
         /**
          * Configure if all existing models should be eagerly sync'd