spell checked

docs/CONTRIBUTE

@@ -16,7 +16,7 @@ The License Issue
  the same license curl and libcurl is already using unless stated otherwise.
 
  If you add a larger piece of code, you can opt to make that file or set of
- files to use a different license as long as they don't enfore any changes to
+ files to use a different license as long as they don't enforce any changes to
  the rest of the package and they make sense. Such "separate parts" can not be
  GPL (as we don't want the GPL virus to attack users of libcurl) but they must
  use "GPL compatible" licenses.