Resolve "Amélioration webpage (URL + stylesheet)"

Closes #80 (closed)

client/src/app/admin/admin-shared/components/webpage-form-content.component.html

@@ -4,7 +4,7 @@
         <div class="code-container line-numbers">
             <textarea
                 #textArea
-                placeholder="Add your code (default html)"
+                placeholder="Add your code ({{ codeType }})"
                 class="text-area-code-editor"
                 id="{{ controlName }}"
                 name="{{ controlName }}"