1.3.4 Orientation - update Note 1 to remove info about having a sensor

Per Issue #779 for alignment with the latest EN 301 549 draft:
- Remove "or that has no sensor to detect or change the orientation" from Note 1.
- Make note 1 only apply to non-web software - not non-web documents.

Author: maryjom

comments-by-guideline-and-success-criterion.md

@@ -141,9 +141,9 @@ This applies directly as written, and as described in [Intent from Understanding
 
 This applies directly as written, and as described in [Intent from Understanding Success Criterion 1.3.4](https://www.w3.org/WAI/WCAG22/Understanding/orientation#intent).
 
-<div class="note wcag2ict">
+<div class="note wcag2ict software">
 
-Content that is only used on hardware with a fixed display orientation or that has no sensor to detect or change the orientation is covered under the essential exception and does not need to provide support for orientation changes.</div>
+Content that is only used on hardware with a fixed display orientation where a user cannot change the orientation is covered under the essential exception and does not need to provide support for orientation changes.</div>
 
 <div class="note wcag2ict software">