Fix typo in security panel.

third_party/WebKit/Source/devtools/front_end/security/SecurityPanel.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.PanelWithSidebar}
  * @implements {WebInspector.TargetManager.Observer}
  */
 WebInspector.SecurityPanel = function()
@@ skipping 590 matching lines @@
     updateSecurityState: function(newSecurityState, explanations, mixedContentStatus, schemeIsCryptographic)
     {
         // Remove old state.
         // It's safe to call this even when this._securityState is undefined.
         this._summarySection.classList.remove("security-summary-" + this._securityState);
 
         // Add new state.
         this._securityState = newSecurityState;
         this._summarySection.classList.add("security-summary-" + this._securityState);
         var summaryExplanationStrings = {
-            "unknown":  WebInspector.UIString("This security of this page is unknown."),
+            "unknown":  WebInspector.UIString("The security of this page is unknown."),
             "insecure": WebInspector.UIString("This page is insecure (broken HTTPS)."),
             "neutral":  WebInspector.UIString("This page is not secure."),
             "secure":   WebInspector.UIString("This page is secure (valid HTTPS).")
         }
         this._summaryText.textContent = summaryExplanationStrings[this._securityState];
 
         this._explanations = explanations,
         this._mixedContentStatus = mixedContentStatus;
         this._schemeIsCryptographic = schemeIsCryptographic;
 
@@ skipping 314 matching lines @@
         row.createChild("div").textContent = key;
 
         var valueDiv = row.createChild("div");
         if (typeof value === "string") {
             valueDiv.textContent = value;
         } else {
             valueDiv.appendChild(value);
         }
     }
 }