Update docs for updating the Mac app

Technotes/MacSoftwareUpdater.md

@@ -2,13 +2,6 @@
 
 To make updating the Mac app easy, we're using the [Sparkle framework][1].
 
-This is added to the project via the Swift Package Manager (SPM), but at the time of writing, tagged versions of Sparkle do not yet support
-SPM — the dependency can only be added from a branch or commit. To avoid any surprises arising from updates to the project's `master`
-branch, we're using [WriteFreely's fork of Sparkle][2]. Updates to the forked repository from upstream should be considered dangerous and
-tested thoroughly before merging into `main`.  
-
-WriteFreely for Mac uses the v1.x branch of Sparkle, and is therefore not a sandboxed app.
-
 ## Troubleshooting
 
 ### If Xcode throws an error when you try to build the project
@@ -22,21 +15,22 @@ You should then be able to build and run the Mac target.
 
 ### If you can't run `generate_keys` because "Apple cannot check it for malicious software"
 
-There may be a code signing issue with Sparkle. Right-click on `generate_keys` in the Finder and choose Open ([reference][3]). 
+If you run into a code signing issue with Sparkle, right-click on `generate_keys` in the Finder and choose Open ([reference][2]). 
 
 ## Deploying Updates
 
-To [publish an update to the app][5], you'll need the **Sparkle-for-Swift-Package-Manager.zip** [archive][4] — specifically, you'll need the
-`generate_appcast` tool. Download and de-compress the archive.
+To [publish an update to the app][4], you'll need the **Sparkle-for-Swift-Package-Manager.zip** [archive][3] — 
+specifically, you'll need the `generate_appcast` tool. Download and de-compress the archive.
 
-You will need some credentials and signing certificates to proceed with this process; speak to the project maintainer if you're responsible for
-creating the update, and confirm you have:
+You will need some credentials and signing certificates to proceed with this process; speak to the project maintainer if
+you're responsible for creating the update, and confirm you have:
 
 - the app's Developer ID Application certificate (check your Mac's system Keychain)
 - the Sparkle EdDSA signing key (again, check your Mac's system Keychain)
 
-Sign and notarize the app archive, then click on **Export Notarized App** in Xcode's Organizer window. Open the Terminal and navigate to
-where you de-compressed the Sparkle-for-Swift-Package-Manager archive, then create a zip file that preserves symlinks:
+Sign and notarize the app archive, then click on **Export Notarized App** in Xcode's Organizer window. Open the Terminal
+and navigate to where you de-compressed the Sparkle-for-Swift-Package-Manager archive, then create a zip file that
+preserves symlinks:
 
 ```bash
 % ditto -c -k --sequesterRsrc --keepParent <source_path_to_app> <zip_destination>
@@ -60,7 +54,6 @@ and they'll be made available to users.
 
 <!--references-->
 [1]: https://sparkle-project.org
-[2]: https://github.com/writefreely/Sparkle
-[3]: https://github.com/sparkle-project/Sparkle/issues/1701#issuecomment-752249920
-[4]: https://github.com/sparkle-project/Sparkle/releases/tag/1.24.0
-[5]: https://sparkle-project.org/documentation/publishing/
+[2]: https://github.com/sparkle-project/Sparkle/issues/1701#issuecomment-752249920
+[3]: https://github.com/sparkle-project/Sparkle/releases/tag/1.24.0
+[4]: https://sparkle-project.org/documentation/publishing/