module: fix style

This makes the linter happy again.

PR-URL: https://github.com/iojs/io.js/pull/1453
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>

lib/module.js

@@ -126,8 +126,8 @@ function tryExtensions(p, exts) {
 
 
 const noopDeprecateRequireDot = util.deprecate(function() {},
-  "warning: require('.') resolved outside the package directory. " +
-  "This functionality is deprecated and will be removed soon.");
+    'warning: require(\'.\') resolved outside the package directory. ' +
+    'This functionality is deprecated and will be removed soon.');
 
 
 Module._findPath = function(request, paths) {