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/rsc/rsc.hpp

@@ -41,6 +41,7 @@ namespace upm {
      * @type pressure temperature
      * @man honeywell
      * @con spi
+     * @snippet rsc.cxx Interesting
      * @web https://sensing.honeywell.com/honeywell-sensing-trustability-rsc-series-data-sheet-32321348-b-en.pdf
      *
      * @brief Description for the RSC TruStability line