fix typo in html templates (#424)

templates/page.html

@@ -30,7 +30,7 @@
     <strong>{{ page.extra.ratio }}%</strong>.
   </p>
   <p>
-    They are now entitled to add one of those shiny badges to your page. But don't forget, even though I tried to make them as small as possibe, a badge will add some kilobytes to your page weight.
+    They are now entitled to add one of those shiny badges to your page. But don't forget, even though I tried to make them as small as possible, a badge will add some kilobytes to your page weight.
     A code snipped can be found by clicking on the respective badge.
   </p>
   <p class="badges">