Fix missing allow-empty tag on ECS and Consul Catalog providers

Co-authored-by: Kevin Pollet <pollet.kevin@gmail.com>

docs/content/providers/ecs.md

@@ -13,18 +13,15 @@ Attach labels to your ECS containers and let Traefik do the rest!
     
     ```toml tab="File (TOML)"
     [providers.ecs]
-      clusters = ["default"]
     ```
     
     ```yaml tab="File (YAML)"
     providers:
-      ecs:
-        clusters:
-          - default
+      ecs: {}
     ```
     
     ```bash tab="CLI"
-    --providers.ecs.clusters=default
+    --providers.ecs=true
     ```
 
 ## Policy

docs/content/reference/static-configuration/cli-ref.md

@@ -330,6 +330,9 @@ TLS key
 `--providers.consul.username`:  
 KV Username
 
+`--providers.consulcatalog`:  
+Enable ConsulCatalog backend with default settings. (Default: ```false```)
+
 `--providers.consulcatalog.cache`:  
 Use local agent caching for catalog reads. (Default: ```false```)
 
@@ -435,6 +438,9 @@ Use the ip address from the bound port, rather than from the inner network. (Def
 `--providers.docker.watch`:  
 Watch Docker Swarm events. (Default: ```true```)
 
+`--providers.ecs`:  
+Enable AWS ECS backend with default settings. (Default: ```false```)
+
 `--providers.ecs.accesskeyid`:  
 The AWS credentials access key to use for making requests
 

docs/content/reference/static-configuration/env-ref.md

@@ -303,6 +303,9 @@ Terminating status code (Default: ```503```)
 `TRAEFIK_PROVIDERS_CONSUL`:  
 Enable Consul backend with default settings. (Default: ```false```)
 
+`TRAEFIK_PROVIDERS_CONSULCATALOG`:  
+Enable ConsulCatalog backend with default settings. (Default: ```false```)
+
 `TRAEFIK_PROVIDERS_CONSULCATALOG_CACHE`:  
 Use local agent caching for catalog reads. (Default: ```false```)
 
@@ -435,6 +438,9 @@ Use the ip address from the bound port, rather than from the inner network. (Def
 `TRAEFIK_PROVIDERS_DOCKER_WATCH`:  
 Watch Docker Swarm events. (Default: ```true```)
 
+`TRAEFIK_PROVIDERS_ECS`:  
+Enable AWS ECS backend with default settings. (Default: ```false```)
+
 `TRAEFIK_PROVIDERS_ECS_ACCESSKEYID`:  
 The AWS credentials access key to use for making requests