Minor spelling correction

example/server/createCA.sh

@@ -10,7 +10,7 @@ echo "The sample scripts used to handle EST operations are NOT"
 echo "intended to provide a secure implementation. They have not"
 echo "been evaluated for security, they have not had a Thread Model"
 echo "reviewed, they are not particularly good about cleaning up after"
-echo "themselves and they assume the data exchnaged is well formed"
+echo "themselves and they assume the data exchanged is well formed"
 echo "if the cryptographic checks pass."
 echo ""
 echo "In short: They are not to be trusted. They provide a functional"