Incorrect spelling, explanation: this mistake may come from the fact that the basic form of the present participle/gerund of this word is get, not gett. When we create a present participle/gerund, we add the -ing suffix to the end of the root, but if a word ends with a stressed consonant and a single vowel, we need to double that consonant. That’s why the correct spelling is getting, not geting.

Definition of getting:
noun (gerund), to take something into your possession, or have something happen that you accept or receive
We’ve been having trouble getting staff.
Getting my work done was an absolute nightmare.

Collocations with getting:
Some most commonly used collocations include:
Getting off – leave a vehicle, aircraft, etc.
Getting out – move out of/depart from
Getting over – recovering from something
Getting the sack – dismissed from a job
Getting a shock – very surprised by something

Correct spelling, explanation: stepping is a present participle/gerund form of the verb get. As you can see, to create this form, we need to do two things: first, add the popular suffix -ing to the word base, and second, double the last consonant, i.e. -t. One of the rules states that when a verb ends in one vowel and a consonant, the latter needs to be doubled. Thus, geting is a mistake and you should spell this word as getting.