doc: formatting slimbootloader.rst

Avoid a warning when building the 'make htmldocs' target:

doc/board/intel/slimbootloader.rst:90: WARNING: Title underline too short.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/doc/board/intel/slimbootloader.rst b/doc/board/intel/slimbootloader.rst
index 4a46fed..07c9b12 100644 (file)
--- a/doc/board/intel/slimbootloader.rst
+++ b/doc/board/intel/slimbootloader.rst
@@ -87,7 +87,7 @@ The PayloadId can be any 4 Bytes value.
    $ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio -pflash Outputs/qemu/SlimBootloader.bin
 
 Build Instruction for Slim Bootloader for LeafHill (APL) target
---------------------------------------------------------------
+---------------------------------------------------------------
 
 LeafHill is using PCI UART2 device as a serial port.
 For MEM32 serial port, CONFIG_SYS_NS16550_MEM32 needs to be enabled in U-Boot.