Transcript unify expectations writing #1788 (#1832)

* Transcript unify expectations writing #1788

* Update video-transcript-1a02b0.md

* Update video-only-transcript-ee13b5.md

* Update _rules/video-only-transcript-ee13b5.md

Co-authored-by: Wilco Fiers <WilcoFiers@users.noreply.github.com>

* Update video-transcript-1a02b0.md

* Update _rules/video-only-transcript-ee13b5.md

Co-authored-by: Kathy Eng <kengdoj@users.noreply.github.com>

* Update video-transcript-1a02b0.md

* Update _rules/video-only-transcript-ee13b5.md

Co-authored-by: Tom Brunet <thbrunet@us.ibm.com>

* Update _rules/video-transcript-1a02b0.md

Co-authored-by: Tom Brunet <thbrunet@us.ibm.com>

Co-authored-by: Wilco Fiers <WilcoFiers@users.noreply.github.com>
Co-authored-by: Kathy Eng <kengdoj@users.noreply.github.com>
Co-authored-by: Jean-Yves Moyen <jym@siteimprove.com>
Co-authored-by: Tom Brunet <thbrunet@us.ibm.com>

Author: 5 people

_rules/video-only-transcript-ee13b5.md

@@ -36,7 +36,7 @@ This rule applies to any [non-streaming](#non-streaming-media-element) `video` e
 
 ## Expectation
 
-The visual information of each test target is available in a text transcript that is available either on the page or through a link. The text transcript needs to be [visible][] and [included in the accessibility tree][].
+The visual information of each test target is available through a text transcript that is [visible][], [included in the accessibility tree][], and is either on the page or linked.
 
 ## Assumptions
 

_rules/video-transcript-1a02b0.md

@@ -41,7 +41,7 @@ This rule applies to every [non-streaming](#non-streaming-media-element) `video`
 
 ## Expectation
 
-A text transcript containing all the visual and auditory information of the test target is available, either on the page or available through a link.
+The visual information of each test target is available through a text transcript that is [visible][], [included in the accessibility tree][], and is either on the page or linked.
 
 **Note:** A "text transcript" in the context of this rule is defined in WCAG 2 as an [alternative for time based media](https://www.w3.org/TR/WCAG21/#dfn-alternative-for-time-based-media).
 
@@ -146,4 +146,5 @@ A video element that is not [visible][].
 </html>
 ```
 
+[included in the accessibility tree]: #included-in-the-accessibility-tree 'Definition of included in the accessibility tree'
 [visible]: #visible 'Definition of visible'