diff --git a/book/chapter-06-gbapp-reference.md b/book/chapter-06-gbapp-reference.md
index 299763d0..855cc090 100644
--- a/book/chapter-06-gbapp-reference.md
+++ b/book/chapter-06-gbapp-reference.md
@@ -213,7 +213,7 @@ sudo apt install remmina remmina-plugin-rdp remmina-plugin-secret
     
 ```
 # Removing Node.js on Linux
-
+```
 sudo rm -rf /usr/local/bin/npm 
 sudo rm -rf /usr/local/share/man/man1/node* 
 sudo rm -rf /usr/local/lib/dtrace/node.d 
@@ -225,7 +225,10 @@ sudo rm -rf /opt/local/lib/node_modules
 sudo rm -rf /usr/local/lib/node*
 sudo rm -rf /usr/local/include/node*
 sudo rm -rf /usr/local/bin/node*
-    
+```
+
+
+
 ![General Bots Inside Visual Studio Code provides a complete artificial intelligence based conversational platform](https://raw.githubusercontent.com/pragmatismo-io/BotServer/master/docs/images/general-bots-inside-visual-studio-code-provides-a-complete-artificial-intelligence-based-conversational-platform.png)
 
 ## Specifications