snippet: Updated all snippet tags

Ensure all src C++ headers which have corresponding C++ examples have
doxygen tags which point to those examples.  Some were missing, some
were invalid, some needed to be updated to match the new example names.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/max44009/max44009.hpp

@@ -103,7 +103,7 @@ namespace upm {
  * @web https://www.maximintegrated.com/en/products/analog/sensors-and-sensor-interface/MAX44009.html
  * @if ilightsensor
  *
- * @snippet iLightSensor.hpp Interesting
+ * @snippet max44009.cxx Interesting
  *
  */
 class MAX44009 : public ILightSensor {