Fixed typo.

documentation/ConvertingR3.14.6AppsToR3.14.7.html

@@ -29,7 +29,7 @@ state notation language code file name.
 <h3>epicsExit</h3>
 <blockquote>
 Code that calls exit or atexit should change these calls to epicsExit
-and epicsAtExit. epicsAtexit was created because of problems on
+and epicsAtExit. epicsAtExit was created because of problems on
 vxWorks and windows with the implementation of atexit,
 i.e. neither of these systems implements exit and atexit according to the POSIX standard.
 </blockquote>