Change "Rosettacode" to "Rosetta Code"

Author: Конрад Боровски

misc/perl6advent-2012/topic-brainstorming

@@ -19,7 +19,7 @@
 - overview of available, useful modules with small example programs
 - learning resources (where do people find help?)
 - Perl 5/Perl 6 comparison (pick a nice problem or two and hilight the
-  differences.  Rosettacode?)
+  differences.  Rosetta Code?)
 - A look at Niecza 
 - nci
 - operator precedence