doc: fix reduce()/filter() example

Author: djdeath

docs/index.html

@@ -1315,7 +1315,7 @@ <h3 id="filter">
           <pre class="brush: javascript">
 var a = [0,1,2,3,4,5,7,7,9];
 
-mori.filter(mori.isEven, a0); // => (0 2 4 6 8)
+mori.filter(mori.isEven, a); // => (0 2 4 6 8)
           </pre>
         </div>
 
@@ -1334,7 +1334,7 @@ <h3 id="remove">
           <pre class="brush: javascript">
 var a = [0,1,2,3,4,5,6,7,9];
 
-mori.remove(mori.isEven, a0); // => (1 3 5 7 9)
+mori.remove(mori.isEven, a); // => (1 3 5 7 9)
           </pre>
         </div>