Land rapid7#9542, Correct Typo

Author: jrobles-r7

modules/auxiliary/scanner/http/http_traversal.rb

@@ -244,7 +244,7 @@ def lfi_download(trigger, files)
 
       vprint_status("#{res.code.to_s} for http://#{rhost}:#{rport}#{uri}") if res
 
-      # Only download files that are withint our interest
+      # Only download files that are within our interest
       if res and res.to_s =~ datastore['PATTERN']
         # We assume the string followed by the last '/' is our file name
         fname = f.split("/")[-1].chop