ABI: sysfs-platform-intel-pmc: add blank lines to make it valid for ReST

The ReST format requires blank lines before/after identation changes,
for it to properly detect lists.

Fixes: ee7abc105e2b ("platform/x86: intel_pmc_core: export platform global reset bits via etr3 sysfs file")
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Link: https://lore.kernel.org/r/3673e1[e-mail]
Signed-off-by: Hans de Goede <[e-mail]>

Documentation/ABI/testing/sysfs-platform-intel-pmc

···
 		to take effect.
 
 		Display global reset setting bits for PMC.
+
 			* bit 31 - global reset is locked
 			* bit 20 - global reset is set
+
 		Writing bit 20 value to the etr3 will induce
 		a platform "global reset" upon consequent platform reset,
 		in case the register is not locked.