Documentation: nvdimm: Fix typo

Remove the extra 'we '.
Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/nvdimm/nvdimm.txt

@@ -284,8 +284,8 @@ A bus has a 1:1 relationship with an NFIT.  The current expectation for
 ACPI based systems is that there is only ever one platform-global NFIT.
 That said, it is trivial to register multiple NFITs, the specification
 does not preclude it.  The infrastructure supports multiple busses and
-we we use this capability to test multiple NFIT configurations in the
-unit test.
+we use this capability to test multiple NFIT configurations in the unit
+test.
 
 LIBNVDIMM: control class device in /sys/class