API: clarify that vscode.openFolder also works with workspace files

src/vs/workbench/api/node/extHostApiCommands.ts

@@ -189,10 +189,10 @@ export class ExtHostApiCommands {
 
 			return this._commands.executeCommand('_files.windowOpen', [uri.fsPath], forceNewWindow);
 		}, {
-				description: 'Open a folder in the current window or new window depending on the newWindow argument. Note that opening in the same window will shutdown the current extension host process and start a new one on the given folder unless the newWindow parameter is set to true.',
+				description: 'Open a folder or workspace in the current window or new window depending on the newWindow argument. Note that opening in the same window will shutdown the current extension host process and start a new one on the given folder/workspace unless the newWindow parameter is set to true.',
 				args: [
-					{ name: 'uri', description: '(optional) Uri of the folder to open. If not provided, a native dialog will ask the user for the folder', constraint: value => value === void 0 || value instanceof URI },
-					{ name: 'newWindow', description: '(optional) Whether to open the folder in a new window or the same. Defaults to opening in the same window.', constraint: value => value === void 0 || typeof value === 'boolean' }
+					{ name: 'uri', description: '(optional) Uri of the folder or workspace file to open. If not provided, a native dialog will ask the user for the folder', constraint: value => value === void 0 || value instanceof URI },
+					{ name: 'newWindow', description: '(optional) Whether to open the folder/workspace in a new window or the same. Defaults to opening in the same window.', constraint: value => value === void 0 || typeof value === 'boolean' }
 				]
 			});