iio: adxl313: fix typos in documentation

Add missing space in "ADXL313is" and improve grammar for
"a single types of channels" to "multiple channels of a single type"
as suggested by Jonathan Cameron.

Wrap long line as suggested by Andy Shevchenko.

Signed-off-by: Wang Zihan <jiyu03@qq.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Author: LangLang03

Documentation/iio/adxl313.rst

@@ -11,7 +11,7 @@ This driver supports Analog Device's ADXL313 on SPI/I2C bus.
 
 * `ADXL313 <https://www.analog.com/ADXL313>`_
 
-The ADXL313is a low noise density, low power, 3-axis accelerometer with
+The ADXL313 is a low noise density, low power, 3-axis accelerometer with
 selectable measurement ranges. The ADXL313 supports the ±0.5 g, ±1 g, ±2 g and
 ±4 g ranges.
 
@@ -112,9 +112,9 @@ apply the following formula:
 Where _offset and _scale are device attributes. If no _offset attribute is
 present, simply assume its value is 0.
 
-The ADXL313 driver offers data for a single types of channels, the table below
-shows the measurement units for the processed value, which are defined by the
-IIO framework:
+The ADXL313 driver offers data for multiple channels of a single type.
+The table below shows the measurement units for the processed value,
+which are defined by the IIO framework:
 
 +-------------------------------------+---------------------------+
 | Channel type                        | Measurement unit          |