[clang] [clang][bytecode] Update high-level documentation (PR #202596)

[Aaron Ballman via cfe-commits]

Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/202596 at github.com>


https://github.com/AaronBallman approved this pull request.

LGTM, only some minor nits

https://github.com/llvm/llvm-project/pull/202596