Wording changes to add clarity

I propose the following changes in wording, which I believe do not change
the intent or normative meaning, but add clarification.  If there's no
disagreement, I will add these to the spec on Friday.

result event
  Substitute "See here[link to SpeechRecognitionEvent] for more
information." with "The event MUST use the SpeechRecognitionEvent
interface."

nomatch event
  Add "The event MUST use the SpeechRecognitionEvent interface."
  Substitute "The result field..." with "The results field..."

The stop method
  Substitute "just the audio that it has received to date" with "just the
audio that it has already received for this recognition."
  Substitute "based on the audio that it has collected to date" with "based
on the audio that it has already collected for this recognition."

Also to be consistent in the headings of the definitions:
  Substitute "The stop method" with "stop method" and elsewhere in headings
where "The" is superfluous.
  Add the word "attribute" to the headings that omit it, including sections
5.1.6, 5.1.7 and 5.1.8.

/Glen Shires