some missing html markup added

[SVN r16349]

doc/projects.html

@@ -139,8 +139,8 @@
           "http://www.slac.stanford.edu">http://www.slac.stanford.edu</a>
           (the first web server site in America, I installed it).</i>
         </blockquote>
-        Which was just too cool a piece of trivia to omit.
-      </dd>
+        Which was just too cool a piece of trivia to omit.<br>
+      &nbsp;</dd>
 
       <dt><a href="http://cctbx.sourceforge.net"
          ><b>cctbx - Computational Crystallography Toolbox</b></a></dt>
@@ -157,7 +157,7 @@
         compile-time polymorphism is used to implement performance
         critical algorithms. The Python and C++ layers are seamlessly
         integrated using Boost.Python.
-
+        <p>
         The SourceForge cctbx project is organized in modules to
         facilitate use in non-crystallographic applications.
         The scitbx module implements a general purpose