Fixes in 1998 html files

This includes some notices to those who wish for a greater challenge.

In the 1998/schweikh3 the man page (and its copy to demonstrate the
entry) have been updated slightly but only in comment (move 'or' from
the command suggested to render it in text to its own line before the
next command also in comment).

The bugs file was updated for an entry or two.

1998/dorssel/README.md

@@ -116,25 +116,17 @@ is the same as
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program without running the command below.
+If you get stuck, come back and read the below.
 
-If you get stuck, come back and run the following command:
+The file [dorssel.html](dorssel.html) contains all the information needed to
+understand this program.
+
+For more information you might also try:
 
 ``` <!---sh-->
     ./dorssel < dorssel.md
 ```
 
-
-### NOTICE to those who wish for a greater challenge:
-
-**If you want a greater challenge, don't read any further**:
-just try to understand the program via the source.
-
-If you get stuck, come back and read below for additional hints and information.
-
-- The file [dorssel.html](dorssel.html) contains all the information needed to
-understand this program.  For spoiler information, try:
-
-
 <!--
 
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