gpio: uapi: fix line info flags description

The description of the flags field of the struct gpio_v2_line_info
mentions "the GPIO lines" while the info only applies to an individual
GPIO line.  This was accidentally changed from "the GPIO line" during
formatting improvements.

Reword to "this GPIO line" to clarify and to be consistent with other
struct gpio_v2_line_info fields.

Fixes: 2cc522d3 ("gpio: uapi: kernel-doc formatting improvements")
Signed-off-by: NKent Gibson <warthog618@gmail.com>
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>

include/uapi/linux/gpio.h

@@ -212,7 +212,7 @@ struct gpio_v2_line_request {
  * @offset: the local offset on this GPIO chip, fill this in when
  * requesting the line information from the kernel
  * @num_attrs: the number of attributes in @attrs
- * @flags: flags for the GPIO lines, with values from &enum
+ * @flags: flags for this GPIO line, with values from &enum
  * gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW,
  * %GPIO_V2_LINE_FLAG_OUTPUT etc, added together.
  * @attrs: the configuration attributes associated with the line