use the same title for chapter 11

Author: ocha-

index.textile

@@ -27,7 +27,7 @@ h3. Part 2: Syntax analysis
 * "Chapter 8: Ruby Language Details":spec.html
 * "Chapter 9: yacc crash course":yacc.html
 * "Chapter 10: Parser":parser.html
-* "Chapter 11: Context-dependent scanner":contextual.html
+* "Chapter 11: Finite-state scanner":contextual.html
 * "Chapter 12: Syntax tree construction":syntree.html
 
 h3. Part 3: Evaluation

script/publish

@@ -56,7 +56,7 @@ navigation = [
     {:label => "Chapter 8: Ruby Language Details", :content => "spec.html"},
     {:label => "Chapter 9: yacc crash course", :content => "yacc.html"},
     {:label => "Chapter 10: Parser", :content => "parser.html"},
-    {:label => "Chapter 11: Context-dependent scanner", :content => "contextual.html"},
+    {:label => "Chapter 11: Finite-state scanner", :content => "contextual.html"},
     {:label => "Chapter 12: Syntax tree construction", :content => "syntree.html"}
   ]},
   {:label => "Part 3: Evaluation", :content => "evaluator.html", :nav => [