fix(tracer): tracer log deprecation warning (#3415)

* fix: fix tracer.log deprecation warning

* chore: add release note for fix

* Update fix-tracer-log-deprecation-f0664631263c6fda.yaml

Author: mabdinur

ddtrace/tracer.py

@@ -210,7 +210,9 @@ def deregister_on_start_span(self, func):
         return func
 
     @removals.removed_property(
-        message="Use ddtrace.tracer.log instead", category=DDTraceDeprecationWarning, removal_version="1.0.0"
+        message="Use logging.getLogger('ddtrace.tracer') instead",
+        category=DDTraceDeprecationWarning,
+        removal_version="1.0.0",
     )
     def log(self):
         # type: () -> logging.Logger

releasenotes/notes/fix-tracer-log-deprecation-f0664631263c6fda.yaml

@@ -0,0 +1,4 @@
+---
+deprecations:
+  - |
+    ``ddtrace.Tracer.log`` is deprecated. Use ``logging.getLogger("ddtrace.tracer")`` instead.