Fix details about 2019/duble sockets

Of course the globs do not have a = at the end of the line; that's from
an aliased ls that shows different characters at EOL depending on the
file type.

I also explained how to delete these files assuming that glob pattern.

In the README.md this was done in the new INABIAF section which is where
it belonged in the first place.

bugs.md

@@ -2086,6 +2086,20 @@ This is NOT a bug and you'll have to (at least at this time?) delete the files
 manually. You shouldn't have to worry about these being added to git: it seems
 to ignore sockets (it did at least in macOS).
 
+NOTE: To get a list of files with this glob try:
+
+```sh
+ls -al |awk '{print $NF}' | grep -E '^\.[A-Z]+'
+```
+
+To delete them you can do:
+
+```sh
+find . -name '.[A-Z]*' -delete
+```
+
+though one might want to check that the program is not currently running. :-)
+
 ## [2019/ciura](2019/ciura/prog.c) ([README.md](2019/ciura/README.md))
 ## STATUS: known bug - please help us fix