staging:nvec:nvec.h Fix typos in staging:nvec

The below patch fixes a typo I found while reading.
Signed-off-by: NJustin P. Mattock <justinmattock@gmail.com>
Cc: Julian Andres Klode <jak@jak-linux.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/nvec/nvec.h

@@ -42,7 +42,7 @@
  * enum nvec_event_size - The size of an event message
  * @NVEC_2BYTES: The message has one command byte and one data byte
  * @NVEC_3BYTES: The message has one command byte and two data bytes
- * @NVEC_VAR_SIZE: The message has one command byte, one count byte, and as
+ * @NVEC_VAR_SIZE: The message has one command byte, one count byte, and has
  *                 up to as many bytes as the number in the count byte. The
  *                 maximum is 32
  *