fix: Only close LP bug once in changelog entry

Indent related fixes under same bug heading

debian/changelog

@@ -1,9 +1,9 @@
 livecd-rootfs (23.10.16) mantic; urgency=medium
 
   * fix: Do not install recommends for ubuntu-cpc minimized project (LP: #2031640)
-  * fix: Remove dangling symlink /boot/initrd.img.old if exists (LP: #2031640)
+    * fix: Remove dangling symlink /boot/initrd.img.old if exists
-  * fix: Ensure required dependencies are installed before trying `grub-install` (LP: #2031640)
+    * fix: Ensure required dependencies are installed before trying `grub-install`
-  * fix: Install required package fuse3 when preseeding snaps (LP: #2031640)
+    * fix: Install required package fuse3 when preseeding snaps
 
  -- Philip Roche <phil.roche@ubuntu.com>  Thu, 17 Aug 2023 11:44:23 +0100