Additional SEO fixes

Author: Tech-Tac

index.html

@@ -4,12 +4,13 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
+    <link rel="canonical" href="https://tech-tac.github.io/" />
     <meta name="title" content="Tech-Tac" />
     <meta name="author" content="Tech-Tac" />
     <meta name="description" content="My projects and how to contact me." />
     <meta name="theme-color" content="#0088ff" />
 
-    <meta property="og:url" content="https://tech-tac.github.io" />
+    <meta property="og:url" content="https://tech-tac.github.io/" />
     <meta property="og:site_name" content="Tech-Tac" />
     <meta property="og:image" content="avatar.png" />
     <meta property="og:image:type" content="image/png" />
@@ -70,7 +71,7 @@ <h3>Cubes</h3>
           </div>
         </section>
         <section>
-          <img src="banners/loading.png" alt="A circular loading bar surrounded by prgoress bits." />
+          <img src="banners/loading.png" alt="A circular loading bar surrounded by progress bits." />
           <h3>Loading...</h3>
           <p>A Progressbar95 clone.</p>
           <div class="button-group">