docs(exporter/newrelicexporter/README.md): Update the new relic expor…

…ter documents (#3194)

* docs(exporter/newrelicexporter/README.md): Update the new relic exporter's config example

* docs(exporter/newrelicexporter/README.md): Update the indent by @a-feld's suggestion

* docs(exporter/newrelicexporter/README.md): fix indent

n

exporter/newrelicexporter/README.md

@@ -39,14 +39,14 @@ exporters:
     apikey: super-secret-api-key
     timeout: 30s
 
-  # host_override is set to send data to New Relic's EU data centers.
-  traces:
-    host_override: trace-api.eu.newrelic.com
-    timeout: 20s
-  metrics:
-    host_override: metric-api.eu.newrelic.com
-  logs:
-    host_override: log-api.eu.newrelic.com
+    # host_override is set to send data to New Relic's EU data centers.
+    traces:
+      host_override: trace-api.eu.newrelic.com
+      timeout: 20s
+    metrics:
+      host_override: metric-api.eu.newrelic.com
+    logs:
+      host_override: log-api.eu.newrelic.com
 ```
 
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