Typo: folding controller. (microsoft#165211)

Author: rebornix

src/vs/workbench/contrib/notebook/browser/controller/foldingController.ts

@@ -23,7 +23,7 @@ import { ICommandHandlerDescription } from 'vs/platform/commands/common/commands
 import { NotebookViewModel } from 'vs/workbench/contrib/notebook/browser/viewModel/notebookViewModelImpl';
 
 export class FoldingController extends Disposable implements INotebookEditorContribution {
-	static id: string = 'workbench.notebook.findController';
+	static id: string = 'workbench.notebook.foldingController';
 
 	private _foldingModel: FoldingModel | null = null;
 	private readonly _localStore = this._register(new DisposableStore());