lib: fix a comment typo in events

Author: kuriyosh

lib/events.js

@@ -242,7 +242,7 @@ function emitUnhandledRejectionOrErr(ee, err, type, args) {
     // we might end up in an infinite loop.
     const prev = ee[kCapture];
 
-    // If the error handler throws, it is not catcheable and it
+    // If the error handler throws, it is not catchable and it
     // will end up in 'uncaughtException'. We restore the previous
     // value of kCapture in case the uncaughtException is present
     // and the exception is handled.