Editorial: tweak alias names

spec.emu

@@ -12,15 +12,15 @@ copyright: false
 <emu-clause id="sec-iterator.concat">
   <h1>Iterator.concat ( ..._items_ )</h1>
   <emu-alg>
-    1. Let _iteratorRecords_ be a new empty List.
+    1. Let _iterables_ be a new empty List.
     1. For each element _item_ of _items_, do
       1. If _item_ is not an Object, throw a *TypeError* exception.
       1. Let _method_ be ? GetMethod(_item_, %Symbol.iterator%).
       1. If _method_ is *undefined*, throw a *TypeError* exception.
-      1. Append the Record { [[OpenMethod]]: _method_, [[Iterable]]: _item_ } to _iteratorRecords_.
-    1. Let _closure_ be a new Abstract Closure with no parameters that captures _iteratorRecords_ and performs the following steps when called:
-      1. For each Record _desc_ of _iteratorRecords_, do
-        1. Let _iter_ be ? Call(_desc_.[[OpenMethod]], _desc_.[[Iterable]]).
+      1. Append the Record { [[OpenMethod]]: _method_, [[Iterable]]: _item_ } to _iterables_.
+    1. Let _closure_ be a new Abstract Closure with no parameters that captures _iterables_ and performs the following steps when called:
+      1. For each Record _iterable_ of _iterables_, do
+        1. Let _iter_ be ? Call(_iterable_.[[OpenMethod]], _iterable_.[[Iterable]]).
         1. If _iter_ is not an Object, throw a *TypeError* exception.
         1. Let _iteratorRecord_ be ? GetIteratorDirect(_iter_).
         1. Let _innerAlive_ be *true*.