add link to hadoop instr. metrics

Author: SylvainJuge

jmx-scraper/README.md

@@ -73,7 +73,7 @@ Supported values for `otel.jmx.target.system` and support for `otel.jmx.target.s
 | `activemq`               | Apache ActiveMQ       | [`activemq.yaml`](src/main/resources/activemq.yaml)             |                                                                                                                                                                                                                                                                                                                       |
 | `cassandra`              | Apache Cassandra      | [`cassandra.yaml`](src/main/resources/cassandra.yaml)           |                                                                                                                                                                                                                                                                                                                       |
 | `hbase`                  | Apache HBase          | [`hbase.yaml`](src/main/resources/hbase.yaml)                   |                                                                                                                                                                                                                                                                                                                       |
-| `hadoop`                 | Apache Hadoop         | [`hadoop.yaml`](src/main/resources/hadoop.yaml)                 |                                                                                                                                                                                                                                                                                                                       |
+| `hadoop`                 | Apache Hadoop         | [`hadoop.yaml`](src/main/resources/hadoop.yaml)                 | [`hadoop.yaml`](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/src/main/resources/jmx/rules/hadoop.yaml) ([doc](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/jetty.md))     |
 | `jetty`                  | Eclipse Jetty         | [`jetty.yaml`](src/main/resources/jetty.yaml)                   | [`jetty.yaml`](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/src/main/resources/jmx/rules/jetty.yaml) ([doc](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/jetty.md))       |
 | `jvm`                    | JVM runtime metrics   | [`jvm.yaml`](src/main/resources/jvm.yaml)                       | [`jvm.yaml`](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/src/main/resources/jmx/rules/jvm.yaml) ([doc](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/jmx-metrics/library/jvm.md))             |
 | `kafka`                  | Apache Kafka          | [`kafka.yaml`](src/main/resources/kafka.yaml)                   |                                                                                                                                                                                                                                                                                                                       |