Documentation: ABI: coresight-tpdm: Fix Bit[3] description indentation

Stephen Rothwell reported htmldocs warnings when merging coresight tree:

Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm:48: ERROR: Unexpected indentation.
Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm:48: WARNING: Block quote ends without a blank line; unexpected unindent.

Fix indentation alignment for Bit[3] list entry in dsb_mode description to
silence above warnings.

Fixes: 018e43ad ("coresight-tpdm: Add node to set dsb programming mode")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/linux-next/20231017143324.75387a21@canb.auug.org.au/Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20231017095608.136277-1-bagasdotme@gmail.comSigned-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm

@@ -54,8 +54,8 @@ Description:
 		Accepts the value needs to be greater than 0. What data
 		bits do is listed below.
 		Bit[0:1] : Test mode control bit for choosing the inputs.
-		Bit[3] : Set to 0 for low performance mode.
-				 Set to 1 for high performance mode.
+		Bit[3] : Set to 0 for low performance mode. Set to 1 for high
+		performance mode.
 		Bit[4:8] : Select byte lane for high performance mode.
 
 What:		/sys/bus/coresight/devices/<tpdm-name>/dsb_edge/ctrl_idx