Doning or Donning: How To spell?
The word Doning is misspelled against Donning, which is present continuous of "Don"
Donning has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings do & ing which should not be misspelled with single 'N'
Wrong Spelling:  do-n-ing  Correct Spelling:  do-nn-ing 
Find more incorrect spellings of Donning to spell right way.