coresight: tpda: Fix intendation for sysfs interface documentation

coresight: tpda: Fix intendation for sysfs interface documentation

linux-next merge complains about build break with make htmldocs :

 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda:45: ERROR: Unexpected indentation. [docutils]

Closes: https://lkml.kernel.org/r/20260106114933.638b073f@canb.auug.org.au
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Jie Gan <jie.gan@oss.qualcomm.com>
Cc: Tao Zhang <tao.zhang@oss.qualcomm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>