Rewrite the on-device speech recognition methods

index.bs

@@ -261,7 +261,7 @@ dictionary SpeechRecognitionEventInit : EventInit {
 
   <dt><dfn attribute for=SpeechRecognition>lang</dfn> attribute</dt>
   <dd>This attribute will set the language of the recognition for the request, using a valid BCP 47 language tag. [[!BCP47]]
-  If unset it remains unset for getting in script, but will default to use the <a spec=html>language</a> of the html document root element and associated hierarchy.
+  If unset it remains unset for getting in script, but will default to use the language of the html document root element and associated hierarchy.
   This default value is computed and used when the input request opens a connection to the recognition service.</dd>
 
   <dt><dfn attribute for=SpeechRecognition>continuous</dfn> attribute</dt>
@@ -704,7 +704,7 @@ interface SpeechSynthesisVoice {
 
   <dt><dfn attribute for=SpeechSynthesisUtterance>lang</dfn> attribute</dt>
   <dd>This attribute specifies the language of the speech synthesis for the utterance, using a valid BCP 47 language tag. [[!BCP47]]
-  If unset it remains unset for getting in script, but will default to use the <a spec=html>language</a> of the html document root element and associated hierarchy.
+  If unset it remains unset for getting in script, but will default to use the language of the html document root element and associated hierarchy.
   This default value is computed and used when the input request opens a connection to the recognition service.</dd>
 
   <dt><dfn attribute for=SpeechSynthesisUtterance>voice</dfn> attribute</dt>