Remove outdated feature/bug in 1991/dds/README.md

As the definition of a bug and feature was changed numerous times the
feature or bug of if a file could not be opened for reading or a file
could not be opened for writing was actually fixed to not crash. This
has not been done in other entries and almost certainly won't be but
with this one it was done (recently when there was a change of bug
status in several entries as how the bugs.md file being referred to in
the README.md files was improved) so this has inconvenient feature was
removed from the README.md file. It was not noted in the thanks file
either so that has been updated as well.

1991/dds/README.md

@@ -39,20 +39,6 @@ What happens if you give the program a C program like itself? Try:
 You'll get errors yes but what does the generated file look like? What about
 other types of files?
 
-Please note that if the BASIC file cannot be opened for reading or the output
-file cannot be opened for writing then this program will very likely crash or do
-something funny.
-
-This is supposed to happen.  As is written in the
-[The Jargon File](http://catb.org/jargon/html/F/feature.html):
-
-```
-That's not a bug, that's a feature.
-```
-
-These are a mild nuisance but are considered a feature not a bug. We challenge
-you to fix it for learning if you wish. See also [bugs.md](/bugs.md).
-
 
 ## Judges' remarks:
 

thanks-for-fixes.md

@@ -1153,7 +1153,11 @@ The key to the string is that it rotates the character by `+1`. This was not
 immediately clear until reading the author's remarks so there was an alt version
 that was something of a kludge, running `make a` instead but that was removed.
 
-Cody also fixed a typo in LANDER.BAS.
+Cody also fixed a typo in LANDER.BAS and made it so that if a file could not be
+opened for reading or a file could not be opened for writing it would not crash.
+The definition of whether that should be a bug to fix or a feature to not fix
+was pondered and changed numerous times and ultimately that problem with this
+entry was fixed. It has not been done in all.
 
 
 ## [1991/fine](1991/fine/fine.c) ([README.md](1991/fine/README.md))