CHANGES: spell fix, use correct path to script

CHANGES

@@ -1,7 +1,7 @@
 See https://curl.haxx.se/changes.html for the edited and human readable online
 version of what has changed over the years in different curl releases.
 
-Generate a CHANGES file like the one present in evey release like this:
+Generate a CHANGES file like the one present in every release like this:
 
 $ git log --pretty=fuller --no-color --date=short --decorate=full | \
-  ./log2changes.pl
+  ./scripts/log2changes.pl