mq303a: Patching up doxygen comments

Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>

src/mq303a/mq303a.h

@@ -34,7 +34,7 @@ namespace upm {
    * @ingroup seeed analog gpio gaseous
    */
   /**
-   * @library libupm-mq303a
+   * @library mq303a
    * @sensor mq303a
    * @comname mq303a Alcohol Sensor
    * @type gaseous