[Doc][Fluentd]: Update the Fluentd log collection doc to reflect 0.12.0

changes

fluentd/README.md

@@ -69,7 +69,6 @@ Setup Example:
   # send them to Datadog
 
 <match datadog.**>
-
   @type datadog
   @id awesome_agent
   api_key <your_api_key>
@@ -83,24 +82,33 @@ Setup Example:
   dd_tags '<KEY1:VALUE1>,<KEY2:VALUE2>'
   dd_sourcecategory '<SOURCE_CATEGORY>'
 
+  <buffer>
+          @type memory
+          flush_thread_count 4
+          flush_interval 3s
+          chunk_limit_size 5m
+          chunk_limit_records 500
+  </buffer>
 </match>
 ```
 
+By default, the plugin is configured to send logs through HTTPS (port 443) using gzip compression.
+
 Additional parameters can be used to change the endpoint used in order to go through a proxy:
 
-- `host`: Proxy endpoint when logs are not directly forwarded to Datadog (default value is `intake.logs.datadoghq.com`)
-- `port`: Proxy port when logs are not directly forwarded to Datadog (default value is `10514`)
-- `ssl_port`: Port used when logs are forwarded in a secure TCP/SSL connection to Datadog (default is `10516`)
+- `host`: Proxy endpoint when logs are not directly forwarded to Datadog (default value is `http-intake.logs.datadoghq.com`)
+- `port`: Proxy port when logs are not directly forwarded to Datadog (default value is `80`)
+- `ssl_port`: Port used when logs are forwarded in a secure TCP/SSL connection to Datadog (default is `443`)
 - `use_ssl`: If `true`, the Agent initializes a secure TCP/SSL connection to Datadog. (default value is `true`)
+- `no_ssl_validation`: If you need to disable SSL hostname validation (default value is `false`)
 
 This also can be used to send logs to **Datadog EU** by setting:
 
 ```conf
 <match datadog.**>
 
   #...
-  host 'tcp-intake.logs.datadoghq.eu'
-  ssl_port '443'
+  host 'http-intake.logs.datadoghq.eu'
 
 </match>
 ```