doc: fix typo in fs.symlink

PR-URL: https://github.com/nodejs/node/pull/5560
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

doc/api/fs.markdown

@@ -742,7 +742,7 @@ Here is an example below:
 fs.symlink('./foo', './new-port');
 ```
 
-It would create a symlic link named with "new-port" that points to "foo".
+It creates a symbolic link named "new-port" that points to "foo".
 
 ## fs.symlinkSync(target, path[, type])