out_s3: Add classic format configuration for Parquet

Signed-off-by: Hiroshi Hatake <[email protected]>

Author: cosmo0920

pipeline/outputs/s3.md

@@ -639,6 +639,7 @@ After being compiled, Fluent Bit can upload incoming data to S3 in Apache Arrow
 For example:
 
 {% tabs %}
+
 {% tab title="fluent-bit.yaml" %}
 
 ```yaml
@@ -726,6 +727,10 @@ Apache Parquet GLib is a part of Apache Arrow project.
 
 Example configuration:
 
+{% tabs %}
+
+{% tab title="fluent-bit.yaml" %}
+
 ```yaml
 service:
     flush: 5
@@ -748,3 +753,31 @@ pipeline:
       compression:     parquet
       # other parameters
 ```
+
+{% endtab %}
+{% tab title="fluent-bit.conf" %}
+
+```text
+[SERVICE]
+    Flush 5
+    Daemon Off
+    Log_Level debug
+    HTTP_Server  Off
+
+[INPUT]
+    Name  dummy
+    Tag   dummy.local
+    Dummy {"boolean": false, "int": 1, "long": 1, "float": 1.1, "double": 1.1, "bytes": "foo", "string": "foo"}
+
+[OUTPUT]
+    Name s3
+    Match           dummy*
+    Region          us-east-2
+    Bucket          <your_testing_bucket>
+    Use_Put_Object    On
+    Compression     parquet
+    # other parameters
+```
+
+{% endtab %}
+{% endtabs %}