Change the codec's name to opentelemetry_logs (opensearch-project#5028)

Signed-off-by: Daniel Li <lhouqua@amazon.com>

data-prepper-plugins/otel-proto-common/src/main/java/org/opensearch/dataprepper/plugins/otel/codec/OTLPJsonLogsCodec.java

@@ -14,7 +14,7 @@
 import java.io.InputStream;
 import java.util.function.Consumer;
 
-@DataPrepperPlugin(name = "otlp_json_logs", pluginType = InputCodec.class)
+@DataPrepperPlugin(name = "opentelemetry_logs", pluginType = InputCodec.class)
 public class OTLPJsonLogsCodec extends OTLPJsonLogsDecoder implements InputCodec {
     public void parse(InputStream inputStream, Consumer<Record<Event>> eventConsumer) throws IOException {
         parse(inputStream, null, eventConsumer);