[LyX/2.1.x] chkconfig.ltx: fix a typo

[Uwe Stöhr]

commit a090f6b289f8ef23ce2a58815fc89371e6eff807
Author: Uwe Stöhr <uwesto...@lyx.org>
Date:   Thu Jan 8 01:42:17 2015 +0100

    chkconfig.ltx: fix a typo

diff --git a/lib/chkconfig.ltx b/lib/chkconfig.ltx
index e6a03af..e1461f9 100644
--- a/lib/chkconfig.ltx
+++ b/lib/chkconfig.ltx
@@ -454,7 +454,7 @@
 \TestPackage{tipx}
 \TestPackage{tone}
 \TestPackage{txfonts}% For the txtt monospaced font
-% symbol packakges supported by LyX for items and the special character dialog
+% symbol packages supported by LyX for items and the special character dialog
 % see the unicodesymbols file
 \TestPackage{ascii}
 \TestPackage{bbding}