Fix "Turn on Bluetooth" chooser url link on ChromeOS

This CL changes the url string to "chrome://settings/#Bluetooth".

BUG=720248

Review-Url: https://codereview.chromium.org/2873963007
Cr-Commit-Position: refs/heads/master@{#471130}

chrome/common/url_constants.cc

@@ -823,7 +823,7 @@ const char kChooserBluetoothOverviewURL[] =
 
 const char kBluetoothAdapterOffHelpURL[] =
 #if defined(OS_CHROMEOS)
-    "chrome://settings/search#Bluetooth";
+    "chrome://settings/#Bluetooth";
 #else
     "https://support.google.com/chrome?p=bluetooth";
 #endif