Kitchen tap is leaking...replace it or fixable?

In the kitchen we have a tap with one handle that kind of swivels to get hot or cold water. The head of the tap is kind of detachable with a hose on it. THe head of the faucet is leaking in one spot on the front, because it is cracked. It's just that one spot but it sprays water outside of the sink. Is this fixable? How would I fix it if it is? (i know nothing about this stuff) or is it better to replace the whole tap?