SRI: add Jonathan Kingston to the acknowledgements

Author: Francois Marier

specs/subresourceintegrity/spec.markdown

@@ -739,8 +739,9 @@ Much of the content here is inspired heavily by Gervase
 Markham's [Link Fingerprints][] concept, as well as WHATWG's [Link Hashes][].
 
 A special thanks to Mike West of Google, Inc. for his invaluable contributions
-to the initial version of this spec. Additonally, Brad Hill, Anne van Kesteren, Mark Nottingham, 
-Dan Veditz, Eduardo Vela, Tanvi Vyas, and Michal Zalewski provided invaluable feedback.
+to the initial version of this spec. Additonally, Brad Hill, Anne van Kesteren,
+Jonathan Kingston, Mark Nottingham, Dan Veditz, Eduardo Vela, Tanvi Vyas, and
+Michal Zalewski provided invaluable feedback.
 
 
 [Link Fingerprints]: http://www.gerv.net/security/link-fingerprints/