Interview thank you misspelling question?

I recently had an interview with 3 people that went really well yesterday. Having looked at the thank you notes that I sent yesterday, I realize that I said "I fell that this type of environment..." rather than "I feel that this type of environment...". Additionally, I put a comma instead of a period at the end of my third paragraph. I only did this for one thank you note. Will this ruin my chances for obtaining the position? This is for an entry level engineering position at a state agency.