docs(pagination): spelling corrections

Closes angular-ui#1358

Author: cbebry

src/pagination/docs/demo.html

@@ -14,7 +14,7 @@ <h4>Pager</h4>
     <pager total-items="totalItems" page="currentPage"></pager>
 
     <hr />
-    <h4>Limit the maximimum visible buttons</h4>
+    <h4>Limit the maximum visible buttons</h4>
     <pagination total-items="bigTotalItems" page="bigCurrentPage" max-size="maxSize" class="pagination-small" boundary-links="true"></pagination>
     <pagination total-items="bigTotalItems" page="bigCurrentPage" max-size="maxSize" class="pagination-small" boundary-links="true" rotate="false" num-pages="numPages"></pagination>