NVMEM documentation fix: A minor typo

This is a minor patch that fixes the following typo in the NVMEM documentation:

When a consumers no longer needs the NVMEM

to,

When a consumer no longer needs the NVMEM
Signed-off-by: NNarendran Sankaran <naren.kernel@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Documentation/nvmem/nvmem.txt

@@ -112,7 +112,7 @@ take nvmem_device as parameter.
 5. Releasing a reference to the NVMEM
 =====================================
 
-When a consumers no longer needs the NVMEM, it has to release the reference
+When a consumer no longer needs the NVMEM, it has to release the reference
 to the NVMEM it has obtained using the APIs mentioned in the above section.
 The NVMEM framework provides 2 APIs to release a reference to the NVMEM.