Fix English

modules/exploits/multi/fileformat/nodejs_js_yaml_load_code_exec.rb

@@ -17,7 +17,7 @@ class Metasploit3 < Msf::Exploit::Remote
       'Name'           => 'Nodejs js-yaml load() Code Execution',
       'Description'    => %q{
         This module can be used to abuse node.js applications that parse user-supplied YAML input
-        using the load() function from the 'js-yaml' package < 2.0.5, who doesn't handle properly
+        using the load() function from the 'js-yaml' package < 2.0.5, which doesn't properly handle
         the unsafe !!js/function tag, allowing to specify a self-executing function which results
         on execution of arbitrary javascript code.
       },