[PATCH] docs: virt: kvm: api.rst: lengthen title line

[Hu Haowen]

Lengthen the underline of title "8.28 KVM_CAP_ENFORCE_PV_FEATURE_CPUID"
in order to fix build warnings.

Signed-off-by: Hu Haowen <src.res@xxxxxxxx>
---
 Documentation/virt/kvm/api.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c6212c2d5fe3..2c15844c0d72 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -7054,7 +7054,7 @@ trap and emulate MSRs that are outside of the scope of KVM as well as
 limit the attack surface on KVM's MSR emulation code.
 
 8.28 KVM_CAP_ENFORCE_PV_FEATURE_CPUID
------------------------------
+-------------------------------------
 
 Architectures: x86
 
-- 
2.25.1