Whitespace fixes.

debian/changelog

@@ -45,9 +45,9 @@ tails (1.6) unstable; urgency=medium
     - Make --capture capture individual videos for failed scenarios
       only, and --capture-all to capture videos for all scenarios.
       (Closes: #10148)
-	- Use the more efficient x264 encoding when capturing videos using
+    - Use the more efficient x264 encoding when capturing videos using
       the --capture* options. (Closes: #10001)
-	- Make --old-iso default to --iso if omitted. Using the same ISO
+    - Make --old-iso default to --iso if omitted. Using the same ISO
       for the USB upgrade tests most often still does what we want,
       e.g. test that the current version of Tails being tested has a
       working Tails installer. Hence this seems like a reasonable