libnvdimm: Trivial comment fix

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20190918211933.13213-1-ira.weiny@intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>

include/linux/nd.h

@@ -147,7 +147,7 @@ static inline int nvdimm_read_bytes(struct nd_namespace_common *ndns,
 
 /**
  * nvdimm_write_bytes() - synchronously write bytes to an nvdimm namespace
- * @ndns: device to read
+ * @ndns: device to write
  * @offset: namespace-relative starting offset
  * @buf: buffer to drain
  * @size: transfer length