[PATCH] Documentation: laptops: thinkpad-acpi: fix underline length build warning

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix underline length build warning in thinkpad-acpi.rst documentation:

Documentation/admin-guide/laptops/thinkpad-acpi.rst:1437: WARNING: Title underline too short.
DYTC Lapmode sensor
------------------

Fixes: acf7f4a59114 ("platform/x86: thinkpad_acpi: lap or desk mode interface")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Nitin Joshi <njoshi1@xxxxxxxxxx>
Cc: Sugumaran <slacshiminar@xxxxxxxxxx>
Cc: Bastien Nocera <bnocera@xxxxxxxxxx>
Cc: Mark Pearson <markpearson@xxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Darren Hart <dvhart@xxxxxxxxxxxxx>
Cc: Henrique de Moraes Holschuh <ibm-acpi@xxxxxxxxxx>
Cc: ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: platform-driver-x86@xxxxxxxxxxxxxxx
---
 Documentation/admin-guide/laptops/thinkpad-acpi.rst |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- lnx-59-rc2.orig/Documentation/admin-guide/laptops/thinkpad-acpi.rst
+++ lnx-59-rc2/Documentation/admin-guide/laptops/thinkpad-acpi.rst
@@ -1434,7 +1434,7 @@ on the feature, restricting the viewing
 
 
 DYTC Lapmode sensor
-------------------
+-------------------
 
 sysfs: dytc_lapmode