Fixes in html files of 1989

1989/roemer/README.md

@@ -21,7 +21,7 @@ than meets the PI.
 ## Author's remarks:
 
 Passes lint, but not with the strictest options, for it contains some
-"null-statements", as well two identifiers which are, if compilers only take 6
+"null-statements", as well as two identifiers which are, if compilers only take 6
 characters, the same.  It also uses `write(2)`, so not totally system
 independent.
 

1989/roemer/index.html

@@ -410,7 +410,7 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
 than meets the PI.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>Passes lint, but not with the strictest options, for it contains some
-“null-statements”, as well two identifiers which are, if compilers only take 6
+“null-statements”, as well as two identifiers which are, if compilers only take 6
 characters, the same. It also uses <code>write(2)</code>, so not totally system
 independent.</p>
 <p>You are very much invited to pass this program through a C-beautifier (first