docs: added docs for OTLP_ENDPOINT around the defaults and format sent (#157)

Author: MarcusDunn

README.md

@@ -234,6 +234,8 @@ Options:
           [env: JSON_OUTPUT=]
 
       --otlp-endpoint <OTLP_ENDPOINT>
+          The grpc endpoint for opentelemetry. Telemetry is sent to this endpoint as OTLP over gRPC.
+          e.g. `http://localhost:4317`
           [env: OTLP_ENDPOINT=]
 
       --cors-allow-origin <CORS_ALLOW_ORIGIN>

router/src/main.rs

@@ -96,6 +96,8 @@ struct Args {
     #[clap(long, env)]
     json_output: bool,
 
+    /// The grpc endpoint for opentelemetry. Telemetry is sent to this endpoint as OTLP over gRPC.
+    /// e.g. `http://localhost:4317`
     #[clap(long, env)]
     otlp_endpoint: Option<String>,
 }