Fix typo in GN name: v8_untrusted_code_mitigations (#379)
Fix typo in GN name: v8_untrusted_code_mitigations (#379)

Current documentation states it as `v8_enable_untrusted_code_mitigations` (extra word `enable` in the middle) in one of the two places. The build will ignore this flag and the user wouldn't benefit from the important untrusted mitigations.
v8/v8.dev