Rename total requests number

lib/metadata/policies.js

@@ -894,7 +894,7 @@ var policies = {
     },
     "totalRequests": {
         "tool": "weightChecker",
-        "label": "Total requests number",
+        "label": "Requests number",
         "message": "<p>This is one of the most important performance rule. Every request is slowing down the page loading.</p><p>There are several technics to reduce their number:<ul><li>Concatenate JS files</li><li>Concatenate CSS files</li><li>Embed or inline small JS or CSS files in the HTML</li><li>Create sprites or icon fonts</li><li>Base64 encode small images in HTML or stylesheets</li><li>Use lazyloading for images</li></ul></p>",
         "isOkThreshold": 15,
         "isBadThreshold": 100,