nvmem: Replace spaces with tab in documentation

Replace two spaces with tab in the sysfs attribute documentation.
No functional change.

Signed-off-by: Marek Vasut <[email protected]>
Signed-off-by: Srinivas Kandagatla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Marek Vasut

Documentation/ABI/stable/sysfs-bus-nvmem

@@ -1,6 +1,6 @@
 What:		/sys/bus/nvmem/devices/.../nvmem
 Date:		July 2015
-KernelVersion:  4.2
+KernelVersion:	4.2
 Contact:	Srinivas Kandagatla <[email protected]>
 Description:
 		This file allows user to read/write the raw NVMEM contents.