Fix top of thanks file

Previously it stated that there were several people who contributed
thousands of changes, fixes and important fixes but this is not strictly
correct as only one, myself, has actually made thousands of changes.
This bothered me because I'm pedantic and by default think literally but
even so it should be correct so now it is, saying that there are a
number of people who have contributed TO several thousand changes and
one who literally (or numerically :-) ) contributed thousands of
changes but I think this improves it too because it's more clear and
after all isn't that the point of the IOCCC? :-)

thanks-for-fixes.md

@@ -5,8 +5,9 @@
 
 ## Thank you honor roll
 
-There are several people who have contributed several thousand changes, fixes
-and important improvements.
+There are a number of people who have contributed to several thousand changes,
+fixes and important improvements and one who has literally (or numerically :-) )
+contributed thousands, that we wish to thank.
 
 We call out the extensive contributions of [Cody Boone
 Ferguson](https://www.ioccc.org/winners.html#Cody_Boone_Ferguson) who is