Release v1.2.1

What's Changed

• docs(source-build):完善GitHub Action自动编译文档 by @Amaing1110 in #40
• feat:文档新增步骤细节和板子按键功能（#41） by @jingxbw-work in #43
• release: v1.2.1 by @HalfSweet in #44

New Contributors

• @Amaing1110 made their first contribution in #40
• @jingxbw-work made their first contribution in #43

Full Changelog: v1.2.0...v1.2.1