pygments syntax highlighting for other toolchains
diff --git a/html-convert/src/main/java/org/netbeans/tools/tutorials/CustomAsciiDocDocumentBuilder.java b/html-convert/src/main/java/org/netbeans/tools/tutorials/CustomAsciiDocDocumentBuilder.java
index 96c4d00..acdd467 100644
--- a/html-convert/src/main/java/org/netbeans/tools/tutorials/CustomAsciiDocDocumentBuilder.java
+++ b/html-convert/src/main/java/org/netbeans/tools/tutorials/CustomAsciiDocDocumentBuilder.java
@@ -178,6 +178,7 @@
             super.emitContent(":jbake-tags: tutorials \n");
             super.emitContent(":jbake-status: published\n");
             super.emitContent(":syntax: true\n");
+            super.emitContent(":source-highlighter: pygments\n");
             super.emitContent(":toc: left\n");
             super.emitContent(":toc-title:\n");
             super.emitContent(":description: " + trimmedContent + " - Apache NetBeans\n");