Fix HTML <img> tag to display pictures from DB

src/Praktikum/Prak2/shop.php

@@ -106,7 +106,7 @@ class Shop extends Page
         foreach ($data as $pizza) {
             echo <<< HTML
                 <label>
-                        <img alt="Image of Pizza {$pizza["name"]}" src="./img/{$pizza["picture"]}">
+                        <img alt="Image of Pizza {$pizza["name"]}" src="{$pizza["picture"]}">
                         <br>
                         {$pizza["name"]}<br>
                         {$pizza["price"]}€