[demo] add source links for fraud detection and frontend proxy (#6716)

Co-authored-by: Roger Coll <[email protected]>
Co-authored-by: tiffany76 <[email protected]>

Author: 3 people

content/en/docs/demo/services/fraud-detection.md

@@ -7,6 +7,8 @@ aliases: [frauddetectionservice]
 This service analyses incoming orders and detects malicious customers. This is
 only mocked and received orders are printed out.
 
+[Fraud Detection service source](https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/fraud-detection/)
+
 ## Auto-instrumentation
 
 This service relies on the OpenTelemetry Java agent to automatically instrument

content/en/docs/demo/services/frontend-proxy.md

@@ -8,6 +8,8 @@ cSpell:ignore: upstreams
 The frontend proxy is used as a reverse proxy for user-facing web interfaces
 such as the frontend, Jaeger, Grafana, load generator, and feature flag service.
 
+[Frontend proxy configuration source](https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/frontend-proxy/)
+
 ## Enabling OpenTelemetry
 
 **NOTE: Only non-synthetic requests will trigger the envoy tracing.**

static/refcache.json

@@ -7183,6 +7183,14 @@
     "StatusCode": 206,
     "LastSeen": "2025-01-16T18:15:57.569765671Z"
   },
+  "https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/fraud-detection/": {
+    "StatusCode": 206,
+    "LastSeen": "2025-04-17T05:21:01.749919499-07:00"
+  },
+  "https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/frontend-proxy/": {
+    "StatusCode": 206,
+    "LastSeen": "2025-04-17T05:21:02.471416614-07:00"
+  },
   "https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/frontend/": {
     "StatusCode": 206,
     "LastSeen": "2025-01-16T11:53:00.941653-05:00"