Fix typo.

Author: gnzlbg

README.md

@@ -43,5 +43,5 @@ at your option.
 ### Contribution
 
 Unless you explicitly state otherwise, any contribution intentionally submitted
-for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be
+for inclusion in jemallocator by you, as defined in the Apache-2.0 license, shall be
 dual licensed as above, without any additional terms or conditions.