List some entries fixed by Yusuke Endoh in thanks

Although there might be others the entries that Yusuke fixed that are
listed here are worthy of mentioning. It only seemed right that since
some of my fixes are mentioned at the top that so too should his.

thanks-for-fixes.md

@@ -23,10 +23,11 @@ you **very much** for your extensive efforts in helping improve the IOCCC
 presentation of past IOCCC winners and making many many past entries work with
 modern systems!
 
-[Yusuke Endoh](/winners.html#Yusuke_Endoh) supplied a number of
-important bug fixes to a number of past IOCCC winners. Some of
-those fixes were **very technically challenging** like
-[1992/lush](1992/lush/lush.c). Thank you **very much** for your help!
+[Yusuke Endoh](/winners.html#Yusuke_Endoh) supplied a number of important bug
+fixes to a number of past IOCCC winners. Some of those fixes were **very
+technically challenging** such as [1989/robison](1989/robison/robison.c),
+[1990/cmills](1990/cmills/cmills.c), [1992/lush](1992/lush/lush.c) and
+[2001/ctk](2001/ctk/ctk.c). Thank you **very much** for your help!
 
 A good number of the [past winners of the IOCCC](winners.html)
 tested, identified and helped correct and/or improve the write-ups