update

Author: Watson1978

README.md

@@ -28,13 +28,13 @@ $ bundle
 
 To receive data, this plugin requires `<http>` or `<grpc>` section, or both.
 
-* Root section
+#### Root section
 
 | parameter | type   | description          | default  |
 |-----------|--------|----------------------|----------|
 | tag       | string | The tag of the event | required |
 
-* `<http>` section
+#### `<http>` section
 
 This requires to receive data via HTTP/HTTPS.
 
@@ -43,7 +43,7 @@ This requires to receive data via HTTP/HTTPS.
 | bind      | string  | The address to bind to | `0.0.0.0` |
 | port      | integer | The port to listen to  | `4318`    |
 
-* `<grpc>` section
+#### `<grpc>` section
 
 This requires to receive data via gRPC.
 
@@ -59,7 +59,6 @@ This requires to receive data via gRPC.
 
 Refer [Config: Transport Section](https://docs.fluentd.org/configuration/transport-section)
 
-
 #### Example
 
 ```
@@ -83,7 +82,9 @@ Refer [Config: Transport Section](https://docs.fluentd.org/configuration/transpo
 
 To send data, this plugin requires `<http>` or `<grpc>` section.
 
-* `<http>` section
+#### `<http>` section
+
+This requires to send data via HTTP/HTTPS.
 
 | parameter                       | type    | description                                                    | default                 |
 |---------------------------------|---------|----------------------------------------------------------------|-------------------------|
@@ -99,13 +100,18 @@ To send data, this plugin requires `<http>` or `<grpc>` section.
 |-----------|--------|-------------------------------------------|------------------|---------|
 | compress  | enum   | The option to compress HTTP request body  | `text` / `gzip`  | `text`  |
 
-* `<grpc>` section
+#### `<grpc>` section
+
+This requires to send data via gRPC.
+
+> [!WARNING]
+> Now, gRPC feature status is experimental.
 
 | parameter                       | type    | description                                                    | default          |
 |---------------------------------|---------|----------------------------------------------------------------|------------------|
 | endpoint                        | string  | The endpoint for HTTP/HTTPS request                            | `127.0.0.1:4317` |
 
-* `<transport>` section
+#### `<transport>` section
 
 | parameter              | type    | description                                    | default |
 |------------------------|---------|------------------------------------------------|---------|
@@ -120,7 +126,7 @@ To send data, this plugin requires `<http>` or `<grpc>` section.
 
 Refer [Config: Transport Section](https://docs.fluentd.org/configuration/transport-section)
 
-* `<buffer>` section
+#### `<buffer>` section
 
 | parameter              | type   | description                                    | default |
 |------------------------|--------|------------------------------------------------|---------|