config: yaml: Add the Parse setting in Format Tips section (#499)

Signed-off-by: Shingo Nakayama <[email protected]>
Co-authored-by: Daijiro Fukuda <[email protected]>

configuration/config-file-yaml.md

@@ -552,4 +552,21 @@ The backslash `\` is interpreted as an escape character. You need `\` for settin
 str_param:   "foo\nbar" # \n is interpreted as actual LF character
 ```
 
+### Parse setting
+
+You can use `parse:` to set up the parser for the input plugin.
+
+Example: in_tail plugin
+
+```yaml
+config:
+  - source:
+      $type: tail
+      tag: sample
+      path: /tmp/test.log
+      pos_file: /tmp/tail-test.pos
+      parse: 
+        $type: none
+```
+
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