[PATCH] docs: Fix WARNING - Title underline too short

[Bolarinwa Olayemi Saheed]

From: Bolarinwa Olayemi Saheed <refactormyself@xxxxxxxxx>

There were two instances of "Title underline too short" and they were
increased to match the title text.

Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@xxxxxxxxx>
---
 Documentation/admin-guide/sysctl/kernel.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 3e68da9fc066..6f7f01b1180c 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -292,7 +292,7 @@ Default value is "``/sbin/hotplug``".
 
 
 hung_task_all_cpu_backtrace:
-================
+============================
 
 If this option is set, the kernel will send an NMI to all CPUs to dump
 their backtraces when a hung task is detected. This file shows up if
@@ -575,7 +575,7 @@ scanned for a given scan.
 
 
 oops_all_cpu_backtrace:
-================
+=======================
 
 If this option is set, the kernel will send an NMI to all CPUs to dump
 their backtraces when an oops event occurs. It should be used as a last
-- 
2.18.2