docs: fix "buidler" typos in Typeface.Builder am: 8aeade4629 am: f36f2de31a am: 88dce482e3 am: 4af722e4aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/9975934

Change-Id: Ie470db5f49e1acd6742183608e8b61af41af1635