changed documentation

Author: GuentherJulian

documentation/Structure.md

@@ -16,9 +16,8 @@
             
 
 
-Write your own tutorials in "./tutorials/[playbook-name]/index.asciidoc".
+Write your own tutorials in "./tutorials/[playbook-name]/index.asciidoc". Images must be saved in a folder called `images`.
 You will find all the details in the tutorials [Developement](https://github.com/devonfw-tutorials/tutorials/wiki/Development) page.
-The images must be saved in a folder called `images`.
 
 
 # File system of the "tutorial-compiler" - repository 

documentation/Tutorials.md

@@ -121,6 +121,7 @@ Description of the tutorial
 ====
 
 The explanation for the step 1
+![alternative text](./assets/image.jpg)
 [step]
 --
 functionName1(parameters)