KVM: S390: Fix typo

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index e8c6843..1e0849e 100644
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -465,7 +465,7 @@
 		guest_perc &= ~PER_EVENT_IFETCH;
 
 	/* All other PER events will be given to the guest */
-	/* TODO: Check alterated address/address space */
+	/* TODO: Check altered address/address space */
 
 	vcpu->arch.sie_block->perc = guest_perc >> 24;