docs: improve changelog

CHANGELOG.md

@@ -17,45 +17,7 @@ and this project adheres to ## [Semantic Versioning](https://semver.org/spec/v2.
 
 * fix: remove 3.10 version test
 
-* fix: tag pylint to avoid error and newrelic to match with edx-platform
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-* fix: rename functions due requirements migrations
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-* fix: line too long
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-* fix: ignore C0103
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-* fix: ignore W0707
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-* fix: ignore R0903, R0904
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-* fix: pylint R1705: Unnecessary "else" after "return"
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-* fix: too-many-ancestors
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-* fix: too-many-ancestors
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-* fix: too-many-instance-attributes
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-* fix: too-many-instance-attributes
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-* fix: unused-wildcard-import
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-* fix: unused-wildcard-import
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-* fix: similar lines in 2 files
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-* fix: similar lines in 2 files
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-* fix: similar lines in 2 files
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-* fix: remove disable codes
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-* fix: remove disable codes
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-* fix: remove disable codes
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-* fix: pylint style
+* fix: pylint issues
 
 * docs: update readme