Update quickstart README.md (#400)

Author: aabmass

samples/instrumentation-quickstart/README.md

@@ -1,8 +1,6 @@
 # OpenTelemetry Python instrumentation example
 
-**This example is under development, and does not currently work**
-
-This sample is a Python application instrumented with TODO. This is a python version
+This sample is a Python application instrumented with OpenTelemetry. This is a python version
 of [this golang
 sample](https://github.com/GoogleCloudPlatform/golang-samples/tree/main/opentelemetry/instrumentation).
 It uses docker compose to run the application and send it some requests.
@@ -85,4 +83,4 @@ After a successful run of the example, you can see the generated metrics in the
 Similarly, to view the generated traces in the GCP console, use the Trace Explorer.
 
 [auth_command]: https://cloud.google.com/sdk/gcloud/reference/beta/auth/application-default/login
-[ADC]: https://cloud.google.com/docs/authentication/application-default-credentials
+[ADC]: https://cloud.google.com/docs/authentication/application-default-credentials