Update release notes

Author: dkbennett

doc/ReleaseNotes.md

@@ -3,15 +3,9 @@
 * Bumped the winget version to 1.28 to match the package version.
 * Additional [options for limiting the size of log files](https://github.com/microsoft/winget-cli/blob/master/doc/Settings.md#file).
 
-# Experimental Feature: 'sourceEdit'
+# Feature: 'source edit'
 New feature that adds an 'edit' subcommand to the 'source' command. This can be used to set an explicit source to be implicit and vice-versa. For example, with this feature you can make the 'winget-font' source an implicit source instead of explicit source.
 
-To enable this feature, add the 'sourceEdit' experimental feature to your settings.
-```
-"experimentalFeatures": {
-    "sourceEdit": true
-},
-```
 To use the feature, try `winget source edit winget-font` to set the Explicit state to the default.
 
 ## Bug Fixes