Not a typo but a correction done by the publisher of your KJV edition.
The KJV 1611 has "after his kinde" and the KJV 1769 has "after his kind" 12 times in 7 verses in Genesis
Gen_1:11; Gen_1:12; Gen_1:21; Gen_1:24; Gen_1:25; Gen_6:20; Gen_7:14.
One of the corrections in the Webster Bible was "after its kind"
The inaccuracies in grammar, such as which for who, his for its, shall for will, should for would, and others, are very numerous in the present version.