feat(benchmark): change samples input type from range to text

Author: jeffbcross

benchmark/web/tree.html

@@ -28,7 +28,7 @@
                 Select number of samples to collect and average:
                 <span id="sampleRangeValue"></span>
               </label>
-              <input id="sampleRange" type="range" min="1" max="100">
+              <input id="sampleRange" type="text">
             </div>
           </form>
           <div class="btn-group">