Fix shim docstring example (#5077)

* Fix incorrect code example in create_tracer() docstring

* Update changelog

* Apply suggestion from @xrmx

---------

Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>
Co-authored-by: Mike Goldsmith <goldsmith.mike@gmail.com>

Author: 3 people

CHANGELOG.md

@@ -12,6 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+- Fix incorrect code example in `create_tracer()` docstring
+  ([#5072](https://github.com/open-telemetry/opentelemetry-python/issues/5072))
 - `opentelemetry-sdk`: add `load_entry_point` shared utility to declarative file configuration for loading plugins via entry points; refactor propagator loading to use it
   ([#5093](https://github.com/open-telemetry/opentelemetry-python/pull/5093))
 - `opentelemetry-sdk`: fix YAML structure injection via environment variable substitution in declarative file configuration; values containing newlines are now emitted as quoted YAML scalars per spec requirement

shim/opentelemetry-opentracing-shim/src/opentelemetry/shim/opentracing_shim/__init__.py

@@ -35,11 +35,11 @@
     # Define which OpenTelemetry Tracer provider implementation to use.
     trace.set_tracer_provider(TracerProvider())
 
-    # Create an OpenTelemetry Tracer.
-    otel_tracer = trace.get_tracer(__name__)
+    # Get the OpenTelemetry TracerProvider.
+    tracer_provider = trace.get_tracer_provider()
 
     # Create an OpenTracing shim.
-    shim = create_tracer(otel_tracer)
+    shim = create_tracer(tracer_provider)
 
     with shim.start_active_span("ProcessHTTPRequest"):
         print("Processing HTTP request")