doc: fix typo in README.md

fix commands getactiverequests description typo

PR-URL: #268
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>

README.md

@@ -245,7 +245,7 @@ The following subcommands are supported:
       getactivehandles  -- Print all pending handles in the queue. Equivalent to running process._getActiveHandles() on
                            the living process.
 
-      getactiverequests -- Print all pending handles in the queue. Equivalent to running process._getActiveHandles() on
+      getactiverequests -- Print all pending requests in the queue. Equivalent to running process._getActiveRequests() on
                            the living process.
 
       inspect         -- Print detailed description and contents of the JavaScript value.