Update CHANGELOG and fix format

Author: rads-1996

sdk/monitor/azure-monitor-opentelemetry-exporter/CHANGELOG.md

@@ -9,6 +9,8 @@
 ### Breaking Changes
 
 ### Bugs Fixed
+- Fix attributes override in Rate Limited Sampler
+  ([#45592](https://github.com/Azure/azure-sdk-for-python/pull/45592))
 - Add environment variable to disable/enable custom properties truncation
   ([#45479](https://github.com/Azure/azure-sdk-for-python/pull/45479))
 - Fix io counters import issue in performance counters
@@ -25,8 +27,6 @@
 ### Bugs Fixed
 - Fix CPU usage calculation logic for live metrics
   ([#45005](https://github.com/Azure/azure-sdk-for-python/pull/45005))
-- Fix attributes override in Rate Limited Sampler
-  ([#45592](https://github.com/Azure/azure-sdk-for-python/pull/45592))
 
 ### Other Changes
 - Fix Ingestion-Side Sampling Disk Persist Behavior

sdk/monitor/azure-monitor-opentelemetry-exporter/tests/trace/test_rate_limited_sampling.py

@@ -230,7 +230,9 @@ def test_sampling_percentage_100_does_not_add_sample_rate_attribute(self):
         sampler._sampling_percentage_generator.get = Mock(return_value=100.0)
 
         original_attributes = {"service.name": "test-service", "operation.name": "test-operation"}
-        result = sampler.should_sample(parent_context=None, trace_id=123, name="test-span", attributes=original_attributes)
+        result = sampler.should_sample(
+            parent_context=None, trace_id=123, name="test-span", attributes=original_attributes
+        )
 
         self.assertEqual(dict(result.attributes), original_attributes)
         self.assertNotIn(_SAMPLE_RATE_KEY, result.attributes)
@@ -246,7 +248,9 @@ def test_sampling_percentage_non_100_adds_sample_rate_attribute(self):
         sampler._sampling_percentage_generator.get = Mock(return_value=42.0)
 
         original_attributes = {"service.name": "test-service", "operation.name": "test-operation"}
-        result = sampler.should_sample(parent_context=None, trace_id=123, name="test-span", attributes=original_attributes)
+        result = sampler.should_sample(
+            parent_context=None, trace_id=123, name="test-span", attributes=original_attributes
+        )
 
         self.assertEqual(dict(result.attributes), {**original_attributes, _SAMPLE_RATE_KEY: 42.0})
         self.assertIn(_SAMPLE_RATE_KEY, result.attributes)