Use `default_testonly = True` in the style example
This keeps consistency with the later section that recommends to use boolean values for boolean-type attributes.
@@ -20,8 +20,8 @@ generate `BUILD` files.
## Formatting example
```python
-# Test code implmenting the Foo controller.
-package(default_testonly = 1)
+# Test code implementing the Foo controller.
+package(default_testonly = True)
py_test(
name = "foo_test",
