createEvent("textevent") creates a TextEvent

See w3c/uievents#362

dom.bs

@@ -5549,7 +5549,6 @@ are:
  <tbody>
  <tr><td>"<code>beforeunloadevent</code>"<td>{{BeforeUnloadEvent}}<td>[[!HTML]]
  <tr><td>"<code>compositionevent</code>"<td>{{CompositionEvent}}<td>[[!UIEVENTS]]
- <!-- textevent also maps to CompositionEvent -->
  <tr><td>"<code>customevent</code>"<td>{{CustomEvent}}<td>
  <tr><td>"<code>devicemotionevent</code>"<td>{{DeviceMotionEvent}}<td rowspan=2>[[!DEVICE-ORIENTATION]]
  <tr><td>"<code>deviceorientationevent</code>"<td>{{DeviceOrientationEvent}}
@@ -5566,7 +5565,7 @@ are:
  <tr><td>"<code>mouseevents</code>"
  <tr><td>"<code>storageevent</code>"<td>{{StorageEvent}}<td>[[!HTML]]
  <tr><td>"<code>svgevents</code>"<td>{{Event}}<td>
- <tr><td>"<code>textevent</code>"<td>{{CompositionEvent}}<td>[[!UIEVENTS]]
+ <tr><td>"<code>textevent</code>"<td>{{TextEvent}}<td>[[!UIEVENTS]]
  <tr><td>"<code>touchevent</code>"<td>{{TouchEvent}}<td>[[!TOUCH-EVENTS]]
  <tr><td>"<code>uievent</code>"<td rowspan=2>{{UIEvent}}<td rowspan=2>[[!UIEVENTS]]
  <tr><td>"<code>uievents</code>"