TOC indent fix

Author: lichtkind

menu.md

@@ -1,13 +1,12 @@
 #Perl 6 for problem solver
 
    + [Chapter 0](/chapter/text0.md) ....... [Main Program](/chapter/bn0.pl6)
-      * [goals](/chapter/text0.md#goals) and [methods](/chapter/text0.md#teaching-method)
-      * [layout of the whole and structure of each chapter](#chapter-layout)
-      * [few prerequisites](/chapter/text0.md#prerequisites)
-      * [Perl philosophy](/chapter/text0.md#perl-philosophy)
-      * [basic syntax rules](/chapter/text0.md#basic-syntax-rules)
-      * [first tiny example: hello math !](/chapter/text0.md#first-example)
-   
+     * [goals](/chapter/text0.md#goals) and [methods](/chapter/text0.md#teaching-method)
+     * [layout of the whole and structure of each chapter](#chapter-layout)
+     * [few prerequisites](/chapter/text0.md#prerequisites)
+     * [Perl philosophy](/chapter/text0.md#perl-philosophy)
+     * [basic syntax rules](/chapter/text0.md#basic-syntax-rules)
+     * [first tiny example: hello math !](/chapter/text0.md#first-example)
    + [Chapter 1](/chapter/text1.md) ....... [Main Program](/chapter/bn1.pl6)
    + [Chapter 2](/chapter/text2.md) ....... [Main Program](/chapter/bn2.pl6)
    + [Chapter 3](/chapter/text3.md) ....... [Main Program](/chapter/bn3.pl6)