Fix a typo in 5.3 release

Change-Id: I9385b9af5e2094ad8c31865724b7c7eaa618f547
diff --git a/debian/changelog b/debian/changelog
index 76e3e33..6bc1a89 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-base-files (10.3+mendel5.2) mendel-eagle; urgency=medium
+base-files (10.3+mendel5.3) mendel-eagle; urgency=medium
 
   * Bump for the Eagle 5.3 release