Update man page for change in "CAPTURE" field.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
When a mixer control has capture capability, the capture flag appears
below the volume bar, too. When the capture is turned off,
-\-\-\-\-\-\- is shown. \fICAPTUR\fP in red appears when the
+\-\-\-\-\-\-\- is shown. \fICAPTURE\fP in red appears when the
capture switch is turned on. In addition, \fIL\fP and \fIR\fP letters
appear in left and right side to indicate that left and the right
channels are turned on.