Update README.md (signalfx#165)

The current link associated with "default configuration of agent-mode collector" leads to an error page. Updated it to the new where I think the webpage was moved to.

examples/README.md

@@ -24,7 +24,7 @@ This example shows how to change default OTel Collector configuration to add
 This approach can be used for any other OTel Collector re-configuration as well.
 Final OTel config will be created by merging the custom config provided in
 `otelAgent.config` into
-[default configuration of agent-mode collector](helm-charts/splunk-otel-collector/templates/config/_otel-agent.tpl).
+[default configuration of agent-mode collector](https://github.com/signalfx/splunk-otel-collector-chart/blob/main/helm-charts/splunk-otel-collector/templates/config/_otel-agent.tpl).
 
 ```yaml
 otelAgent: