KVM: x86: Fix hypercalls docs section number order

KVM: x86: Fix hypercalls docs section number order

Commit 4180bf1b655a79 ("KVM: X86: Implement "send IPI" hypercall")
documents KVM_HC_SEND_IPI hypercall, yet its section number duplicates
KVM_HC_CLOCK_PAIRING one (which both are 6th). Fix the numbering order
so that the former should be 7th.

Fixes: 4180bf1b655a ("KVM: X86: Implement "send IPI" hypercall")
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20250909003952.10314-1-bagasdotme@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com>