Update use_parent_strategy description in Getting Started

[DC00]

Description

From my understanding, based on the acceptance spec here, use_parent_strategy should be true if we do not want to save associations.

Should the corresponding example in the build strategies section of the Getting Started guide be changed to FactoryBot.use_parent_strategy = true ?

https://github.com/thoughtbot/factory_bot/pull/1541

Reproduction Steps

Expected behavior

Actual behavior

System configuration

factory_bot version:
rails version:
ruby version: