Correct changelog entry.

debian/changelog

@@ -83,12 +83,11 @@ tails (2.6) unstable; urgency=medium
     - Run usb_upgrade.feature earlier, when there is enough free disk
       space left. (Closes: #11582)
     - Use more recent virtual hardware in the system under test,
-      i.e. USB 3.0 (nec-xhci) on a pc-i440fx-2.5 machine. I have some
-      vague hope that switching USB controllers might help with
-      problems we see on Jenkins when booting from USB (#11588). Also,
-      there are chances that more recent virtual hardware sees more
-      testing these days, so it sounds potentially useful to
-      "upgrade".
+      i.e. USB 3.0 (nec-xhci) on a pc-i440fx-2.5 machine. Switching
+      USB controllers has helped with problems we see on Jenkins when
+      booting from USB (#11588). Also, there are chances that more
+      recent virtual hardware sees more testing these days, so it
+      sounds potentially useful to "upgrade".
     - Add support for Cucumber 2.4. (Closes: #11690)
     - Always write {pretty,debug} logs and JSON output to the artifact
       directory.