typos and grammar fixed

Author: pathywang

Wireframe/index.html

@@ -12,14 +12,13 @@
   <header>
     <h1>Wireframe</h1>
     <p>
-      Can I give some explanation regarding what the purpose of README file and wireframe are and what the branch in Git
-      is.
+      This page explains the purpose of a README file, a wireframe, and Git branches.
     </p>
   </header>
   <main>
     <article>
       <img src="placeholder.svg" alt="Diagram placeholder" />
-      <h2>README.file</h2>
+      <h2>README file</h2>
       <p>
         A README file serves as a crucial documentation tool, primarily used to provide essential information about a
         software project, dataset, or any other file collection. It's designed to help users (both developers and
@@ -34,7 +33,7 @@ <h2>README.file</h2>
       <img src="placeholder.svg" alt="Diagram placeholder" />
       <h2>Purpose of wireframe</h2>
       <p>
-        Wireframes are a visual guide to what a product should look like. Their main goal is to create an app or site
+        Wireframe is a visual guide to what a product should look like. Their main goal is to create an app or site
         that delivers a cohesive and well-designed experience. They are also a great way to ensure that every element in
         a UI has a purpose.
       </p>