x86/cpu: Fix typo in x86_match_cpu()'s doc

Fix typo in x86_match_cpu()'s description.

  [ bp: Massage commit message. ]

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20241030065804.407793-1-raag.jadav@intel.com