fix: add auth plugins to TOC

Author: josbeir

toc_en.json

@@ -670,6 +670,14 @@
           "text": "Topics",
           "link": "/topics"
         },
+        {
+            "text": "Authentication",
+            "link": "https://book.cakephp.org/authentication/"
+        },
+        {
+            "text": "Authorization",
+            "link": "https://book.cakephp.org/authorization/"
+        },
         {
           "text": "Chronos",
           "link": "/chronos"
@@ -693,4 +701,4 @@
       ]
     }
   ]
-}
+}