SensorCollection: Allow slash at end

Before:
curl -k https://${bmc}/redfish/v1/Chassis/chassis/Sensors/
Not Found

After both /Sensors/ and /Sensors return the SensorCollection.

This follows the pattern in other bmcweb redfish resources and
the redfish protocol.

Tested:
Ran the validator.

curl -k https://${bmc}/redfish/v1/Chassis/chassis/Sensors/
{
  "@odata.id": "/redfish/v1/Chassis/chassis/Sensors",
  "@odata.type": "#SensorCollection.SensorCollection",
  "Description": "Collection of Sensors for this Chassis",
  "Members": [
    {

Change-Id: Id6ae5b62470c4155e7e17328037b6b2dbe2ab57e
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/redfish-core/lib/sensors.hpp b/redfish-core/lib/sensors.hpp
index 9061165..39a815a 100644
--- a/redfish-core/lib/sensors.hpp
+++ b/redfish-core/lib/sensors.hpp
@@ -2856,7 +2856,7 @@
 {
   public:
     SensorCollection(CrowApp& app) :
-        Node(app, "/redfish/v1/Chassis/<str>/Sensors", std::string())
+        Node(app, "/redfish/v1/Chassis/<str>/Sensors/", std::string())
     {
         entityPrivileges = {
             {boost::beast::http::verb::get, {{"Login"}}},