Fixing typos in the documentation AND commented-out getSeed draft

Fixed typos in documentation present in rrc_api.h, rrc_utilities.h, rrc_logging_api.h, rrc_nom_api.h. All words should be spelled correctly (at least in the documentation)

In addition, a non-functional draft of getSeed is in there. But it's not working so I commented it out. Should I submit these are two different pull requests?