Fix defaults for --importHelpers

Author: mhegazy

pages/Compiler Options.md

@@ -18,7 +18,7 @@ Option                                         | Type      | Default
 `--experimentalDecorators`<sup>[1]</sup>       | `boolean` | `false`                        | Enables experimental support for ES decorators.
 `--forceConsistentCasingInFileNames`           | `boolean` | `false`                        | Disallow inconsistently-cased references to the same file.
 `--help`<br/>`-h`                              |           |                                | Print help message.
-`--importHelpers`                              | `string`  |                                | Import emit helpers (e.g. `__extends`, `__rest`, etc..) from [`tslib`](https://www.npmjs.com/package/tslib)
+`--importHelpers`                              | `boolean` | `false`                        | Import emit helpers (e.g. `__extends`, `__rest`, etc..) from [`tslib`](https://www.npmjs.com/package/tslib)
 `--inlineSourceMap`                            | `boolean` | `false`                        | Emit a single file with source maps instead of having a separate file.
 `--inlineSources`                              | `boolean` | `false`                        | Emit the source alongside the sourcemaps within a single file; requires `--inlineSourceMap` or `--sourceMap` to be set.
 `--init`                                       |           |                                | Initializes a TypeScript project and creates a `tsconfig.json` file.