Update docdown to fix doc bugs related to params that are properties of other params. [ci skip]

vendor/benchmark.js/benchmark.js

@@ -30,12 +30,15 @@
   /** Used to assign each benchmark an incrimented id */
   var counter = 0;
 
-  /** Used to make every compiled test unique */
-  var uidCounter = 0;
+  /** Detect the popular CommonJS extension `module.exports` */
+  var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;
 
   /** Used to detect primitive types */
   var rePrimitive = /^(?:boolean|number|string|undefined)$/;
 
+  /** Used to make every compiled test unique */
+  var uidCounter = 0;
+
   /** Used to assign default `context` object properties */
   var contextProps = [
     'Array', 'Date', 'Function', 'Math', 'Object', 'RegExp', 'String', '_',
@@ -2846,18 +2849,18 @@
     var Benchmark = runInContext();
 
     // check for `exports` after `define` in case a build optimizer adds an `exports` object
-    if (freeExports && !freeExports.nodeType) {
-      // in Node.js or RingoJS v0.8.0+
-      if (freeModule) {
+    if (freeExports && freeModule) {
+      // in Node.js or RingoJS
+      if (moduleExports) {
         (freeModule.exports = Benchmark).Benchmark = Benchmark;
       }
-      // in Narwhal or RingoJS v0.7.0-
+      // in Narwhal or Rhino -require
       else {
         freeExports.Benchmark = Benchmark;
       }
     }
-    // in a browser or Rhino
     else {
+      // in a browser or Rhino
       root.Benchmark = Benchmark;
     }
   }

vendor/docdown/src/DocDown/Entry.php

@@ -141,12 +141,16 @@ class Entry {
       // compose parts
       $result = array($result);
       $params = $this->getParams();
+      $paramNames = array();
 
       foreach ($params as $param) {
         // skip params that are properties of other params (e.g. `options.leading`)
-        if (!preg_match('/\w+\.[\w.]+\s*=/', $param[1])) {
+        preg_match('/\w+(?=\.[\w.]+)/', $param[1], $parentParam);
+        $parentParam = $parentParam[0];
+        if (!in_array($parentParam, $paramNames)) {
           $result[] = $param[1];
         }
+        $paramNames[] = preg_replace('/^\[|\]$/', '', $param[1]);
       }
       // format
       $result = $name .'('. implode(array_slice($result, 1), ', ') .')';