remove the version-specific URL

Author: johnkemnetz

articles/azure-monitor/platform/collect-custom-metrics-linux-telegraf.md

@@ -15,7 +15,7 @@ By using Azure Monitor, you can collect custom metrics via your application tele
 
 ## InfluxData Telegraf agent 
 
-[Telegraf](https://docs.influxdata.com/telegraf/v1.7/) is a plug-in-driven agent that enables the collection of metrics from over 150 different sources. Depending on what workloads run on your VM, you can configure the agent to leverage specialized input plug-ins to collect metrics. Examples are MySQL, NGINX, and Apache. By using output plug-ins, the agent can then write to destinations that you choose. The Telegraf agent has integrated directly with the Azure Monitor custom metrics REST API. It supports an Azure Monitor output plug-in. By using this plug-in, the agent can collect workload-specific metrics on your Linux VM and submit them as custom metrics to Azure Monitor. 
+[Telegraf](https://docs.influxdata.com/telegraf/) is a plug-in-driven agent that enables the collection of metrics from over 150 different sources. Depending on what workloads run on your VM, you can configure the agent to leverage specialized input plug-ins to collect metrics. Examples are MySQL, NGINX, and Apache. By using output plug-ins, the agent can then write to destinations that you choose. The Telegraf agent has integrated directly with the Azure Monitor custom metrics REST API. It supports an Azure Monitor output plug-in. By using this plug-in, the agent can collect workload-specific metrics on your Linux VM and submit them as custom metrics to Azure Monitor. 
 
  ![Telegraph agent overview](./media/collect-custom-metrics-linux-telegraf/telegraf-agent-overview.png)