correcting minor type to make field required

examples/clients/vue.html

@@ -55,7 +55,7 @@
     <div class="filters row">
       <div class="form-group col-sm-3">
         <label for="search-element">Filter</label>
-        <input v-model="searchKey" class="form-control" id="search-element" requred/>
+        <input v-model="searchKey" class="form-control" id="search-element" required/>
       </div>
     </div>
     <table class="table">