Merge pull request github#533 from github/update-1402371792

Author: hubot

content/webhooks/securing/index.md

@@ -57,7 +57,7 @@ The goal is to compute a hash using your `SECRET_TOKEN`, and ensure that the has
     end
 
     def verify_signature(payload_body)
-      signature = 'sha1=' + OpenSSL::HMAC.hexdigest(OpenSSL::Digest::Digest.new('sha1'), ENV['SECRET_TOKEN'], payload_body)
+      signature = 'sha1=' + OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), ENV['SECRET_TOKEN'], payload_body)
       return halt 500, "Signatures didn't match!" unless Rack::Utils.secure_compare(signature, request.env['HTTP_X_HUB_SIGNATURE'])
     end