Fixed typo

PR-URL: nodejs/node-v0.x-archive#25811
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: radarhere

ChangeLog

@@ -2802,7 +2802,7 @@
   - Support for parallel use of the cache folder
   - Retry on registry timeouts or network failures (Trent Mick)
   - Reduce 'engines' failures to a warning
-  - Use new zsh completion if aviailable (Jeremy Cantrell)
+  - Use new zsh completion if available (Jeremy Cantrell)
 
 * Fix #3577 Un-break require('sys')