README: add a description about record_modifier
@@ -43,6 +43,7 @@ $ bin/fluent-bit -i cpu -o stdout
| name | option | description |
|--------------------|------------|---------------------------------------------------------------------------------|
+| Record Modifier | record_modifier | Append/Remove key-value pair |
| Grep | grep | Match or exclude specific records by patterns |
| Kubernetes | kubernetes | Enrich logs with Kubernetes Metadata |
| Stdout | stdout | Print records to the standard output interface |
