Convert SVG -> PNG to avoid cross-browser rendering issues (#45)

Author: ryanuber

website/docs/cloud-docs/agents/telemetry.mdx

@@ -18,7 +18,7 @@ open source platform, which enables the Terraform Cloud Agent to remain
 vendor-agnostic while producing high-value telemetry data for a wide array
 of platforms.
 
-![telemetry architecture diagram](/img/telemetry-arch.svg)
+![telemetry architecture diagram](/img/telemetry-arch.png)
 
 ## Agent Configuration