Normative: Add missing name property for %IntlSegmentsPrototype%[%Symbol.iterator%] (#1015)

Author: anba

spec/segmenter.html

@@ -229,6 +229,7 @@ <h1>%IntlSegmentsPrototype% [ %Symbol.iterator% ] ( )</h1>
           1. Let _string_ be _segments_.[[SegmentsString]].
           1. Return CreateSegmentIterator(_segmenter_, _string_).
         </emu-alg>
+        <p>The value of the *"name"* property of this function is *"[Symbol.iterator]"*.</p>
       </emu-clause>
     </emu-clause>