Fixing typos

Original: millenia, puposes
Corrected: millennia, purposes

what.html

@@ -42,7 +42,7 @@ <h3>Brute force searching</h3>
             <li>65-bits: ~ 7 months.</li>
             <li>70-bits: ~ 19 years.</li>
             <li>75-bits: ~ 600 years.</li>
-            <li>80-bits: ~ 19 millenia.</li>
+            <li>80-bits: ~ 19 millennia.</li>
           </ul>
         </p>
         <p>As you can see, this follows an exponential curve. Further, you can see that the graph gets nearly vertical very quickly. This is known as the "exponential wall". Eventually, it just gets too expensive for an attacker to make the brute force search successful.</p>
@@ -52,7 +52,7 @@ <h3>The conclusion</h3>
     </div>
     <div id="footer">
       <center>
-        <p><strong>Disclaimer: This is for demonstration puposes only and is not logging passwords!</strong></p>
+        <p><strong>Disclaimer: This is for demonstration purposes only and is not logging passwords!</strong></p>
         <p>
           <a href="https://github.com/atoponce/webpassgen"><img title="Get the source code" src="assets/github.png" /></a>
           <a href="https://github.com/atoponce/webpassgen/releases/latest"><img title="Download latest release" src="assets/download.png" /></a>