Rephase

I never heard about the "source of a repository".

wiki/src/news/version_4.18.mdwn

@@ -34,9 +34,9 @@ hardware (graphics, Wi-Fi, and so on).
 - Display an error message when the Upgrader fails to download the signing key.
   This has been a silent error since 4.14. ([[!tails_ticket 18238]])
 
-- Use more reliable HTTPS sources for Debian's APT repository
+- Use more reliable Debian repositories
 
-  Tails now uses non-onion HTTPS sources to access the repository, for increased reliability with
+  Tails now connects to the APT repositories of Debian using their HTTPS address instead of their .onion address, for increased reliability with
   *[[Additional Software|doc/first_steps/additional_software]]* installation.
   We left other Tails and Tor Project APT onion sources as is. ([[!tails_ticket 17993]])