[llvm] [BOLT] Fix typos (PR #68121)

[via llvm-commits]

spaette wrote:

typo fix `reordering` not implemented

$ sed 1q llvm-project/bolt/include/bolt/Passes/ReorderAlgorithm.h
//===- bolt/Passes/ReorderAlgorithm.h - Basic block reorderng ---*- C++ -*-===//
$ 

https://github.com/llvm/llvm-project/pull/68121