PrepareFunctionForOptimize should read PrepareFunctionForOptimization

Change-Id: Ia8402d10c28fb714cc0ab2705ae0f995e604825d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1848231
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64171}