Fixed typos, condensed verbosity

[SVN r30798]

more/generic_programming.html

@@ -141,10 +141,10 @@ int main()
     </blockquote>
 
     <h2><a name="concept">Anatomy of a Concept</a></h2>
-    A <b><i>concept</i></b> is a set requirements, where the requirements
-    consist of valid expressions, associated types, invariants, and
-    complexity guarantees. A type that satisfies the set of requirements is
-    said to <b><i>model</i></b> the concept. A concept can extend the
+    A <b><i>concept</i></b> is a set of requirements
+    consisting of valid expressions, associated types, invariants, and
+    complexity guarantees.  A type that satisfies the requirements is
+    said to <b><i>model</i></b> the concept.  A concept can extend the
     requirements of another concept, which is called
     <b><i>refinement</i></b>.