replaced less with fewer

Author: rogerdudler

index.html

@@ -142,7 +142,7 @@ <h2>tagging</h2>
             <code>git tag 1.0.0 1b2e1d63ff</code><br />
             the <i>1b2e1d63ff</i> stands for the first 10 characters of the commit id you want to reference with your tag. You can get the commit id with <br />
             <code>git log</code><br />
-            you can also use less characters of the commit id, it just has to be unique.
+            you can also use fewer characters of the commit id, it just has to be unique.
         </p>
     </div>
     <a name="checkout-replace"></a>