updating the paragraph of the Header element

Author: Tobias-Amaechina

Wireframe/index.html

@@ -10,7 +10,8 @@
     <header>
       <h1>Wireframe</h1>
       <p>
-        This is the default, provided code and no changes have been made yet.
+        An Article about the purpose of a readme file ,and a wireframe,
+        and also on what a Git branch is and how to use it.
       </p>
     </header>
     <main>