fixed capitalisation in pancake graph and number of edges in burnt pa…

…ncake

doc/examples.xml

@@ -500,8 +500,8 @@ gap> TriangularGridGraph(IsMutable, 3, 3);
   <Returns>A digraph.</Returns>
   <Description>
     If <A>n</A> is a positive integer, then this operation returns
-    the <E>Pancake graph</E> with <M>n!</M> vertices and <M>n!(n - 1)</M>
-    directed edges. The <M>n</M>th Pancake graph is the Cayley graph of the
+    the <E>pancake graph</E> with <M>n!</M> vertices and <M>n!(n - 1)</M>
+    directed edges. The <M>n</M>th pancake graph is the Cayley graph of the
     symmetric group acting on <C>[1 .. <A>n</A>]</C> with respect to the
     generating set consisting of the <Q>prefix reversals</Q>. This generating
     set consists of the permutations <C>p2</C>, <C>p3</C>, ...,
@@ -539,8 +539,8 @@ true]]></Example>
   <Returns>A digraph.</Returns>
   <Description>
     If <A>n</A> is a positive integer, then this operation returns
-    the <E>burnt pancake graph</E> with <M>n!</M> vertices and <M>n!(n - 1)</M>
-    directed edges. The <M>n</M>th Pancake graph is the Cayley graph of the
+    the <E>burnt pancake graph</E> with <M>n!</M> vertices and <M>n2^(n)n!</M>
+    directed edges. The <M>n</M>th burnt pancake graph is the Cayley graph of the
     hyperoctahedral group acting on <C>[<A>-n</A> .. -1, 1 .. <A>n</A>]</C> with respect to the
     generating set consisting of the <Q>prefix reversals</Q>, which are defined in exactly
     the same way as in  <Ref Oper="PancakeGraph"/>. The hyperoctahedral group consists of