Update spelling and punctuation

index.html

@@ -26,12 +26,12 @@ <h1>Fork-n-Go!</h1>
 
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         <h2>Part I: GitHub Pages</h2>
-        <p><strong>GitHub Pages</strong> is free web hosting for files files on a branch named <code>gh-pages</code> in a repository. They can be found served up (like this site) at: <code>username.github.io/repository</code></p>
+        <p><strong>GitHub Pages</strong> is free web hosting for files on a branch named <code>gh-pages</code> in a repository. They can be found served up (like this site) at: <code>username.github.io/repository</code>.</p>
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         <h2>Part II: Fork</h2>
-        <p>Open source GitHub repositories can be <strong>forked</strong> by anyone else on GitHub. This creates a copy of that repository on your account.  When you fork a website, you get a website.</p>
+        <p>Open source GitHub repositories can be <strong>forked</strong> by anyone else on GitHub. This creates a copy of that repository on your account. When you fork a website, you get a website.</p>
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