regulators: Improve I2CCaptureBytesAction doxygen

Improve the doxygen comments for the I2CCaptureBytesAction class.

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: Ic3352f0e35ab2dab8ea0a97d35ce66b4ddcdcca5
diff --git a/phosphor-regulators/src/actions/i2c_capture_bytes_action.hpp b/phosphor-regulators/src/actions/i2c_capture_bytes_action.hpp
index c17e191..0e7beb6 100644
--- a/phosphor-regulators/src/actions/i2c_capture_bytes_action.hpp
+++ b/phosphor-regulators/src/actions/i2c_capture_bytes_action.hpp
@@ -47,7 +47,7 @@
     /**
      * Constructor.
      *
-     * Throws an exception if any of the input parameters are invalid.
+     * Throws an exception if the count parameter is invalid.
      *
      * @param reg Device register address.  Note: named 'reg' because 'register'
      *            is a reserved keyword.