That just resets the entire dictionary, it doesn't make the changes the OP was asking about.or you could just reset the keyboard dictionary by settings > general > reset > reset keyboard dictionary
It will help. If the op has typed te a thousand times the phone has learned and thinks it is a word and the intended word. Resetting the dictionary will start you back at zero and the te will be corrected to the.That just resets the entire dictionary, it doesn't make the changes the OP was asking about.
Sent from my iOS echosystem!