iio: common: ms_sensors: ms_sensors_i2c: Fix misspelling of parameter 'client'

Probably due to docrot.

Fixes the following W=1 kernel build warning(s):

 drivers/iio/common/ms_sensors/ms_sensors_i2c.c:186: warning: Function parameter or member 'client' not described in 'ms_sensors_read_serial'
 drivers/iio/common/ms_sensors/ms_sensors_i2c.c:186: warning: Excess function parameter 'cli' description in 'ms_sensors_read_serial'

Cc: William Markezana <william.markezana@meas-spec.com>
Cc: Ludovic Tancerel <ludovic.tancerel@maplehightech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/common/ms_sensors/ms_sensors_i2c.c

@@ -165,7 +165,7 @@ static bool ms_sensors_crc_valid(u32 value)
 
 /**
  * ms_sensors_read_serial() - Serial number read function
- * @cli:	pointer to i2c client
+ * @client:	pointer to i2c client
  * @sn:		pointer to 64-bits destination value
  *
  * Generic i2c serial number read function for Measurement Specialties devices.