8.2 Wording Change "heartache" to "future headaches"

[musicmind97]

Notice that assign works similar to <-, If an object already exists with the given name in the given environment, assign will overwrite it without asking for permission. This makes assign useful for updating objects but creates the potential for

heartache.

Notice that assign works similar to <-, If an object already exists with the given name in the given environment, assign will overwrite it without asking for permission. This makes assign useful for updating objects but creates the potential for

future headaches.

#36