fix config examples in entrypoints.md

docs/content/reference/install-configuration/entrypoints.md

@@ -25,6 +25,7 @@ entryPoints:
 
   websecure:
     address: :443
+    http:
       tls: {}
       middlewares:
         - auth@kubernetescrd
@@ -151,6 +152,7 @@ are applied after the ones declared on the Entrypoint)
 entryPoints:
   web:
     address: :80
+    http:
       middlewares:
         - auth@kubernetescrd
         - strip@file
@@ -160,6 +162,7 @@ entryPoints:
 ports:
   web:
     port: :80
+    http:
       middlewares:
         - auth@kubernetescrd
         - strip@file