Doc Upate: Telemetry proxy env (#57545)

specificity of env setup

Author: alexAtSourcegraph

doc/admin/pings.md

@@ -213,8 +213,12 @@ Prior to 5.2.0, allowlist the full [Cloudflare IP ranges](https://www.cloudflare
 
 The environment variable `TELEMETRY_HTTP_PROXY` can be set on the `sourcegraph-frontend` service, to use an HTTP proxy for telemetry requests.
 
+
+Be sure to update the enviornment variable like so : ```TELEMETRY_HTTP_PROXY:"http://proxy.example.com:8080"```
+
 ## Connections to Sourcegraph-managed services
 
+
 Sourcegraph only connects to Sourcegraph-managed services for three purposes:
 
 1. The pings described above are sent, in order to: