Merge branch 'fix/metrics-cold-start-split' of https://github.com/heitorlessa/aws-lambda-powertools-python into fix/metrics-cold-start-split

* 'fix/metrics-cold-start-split' of https://github.com/heitorlessa/aws-lambda-powertools-python:
  chore: grammar

Author: heitorlessa

CHANGELOG.md

@@ -47,7 +47,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [1.0.1] - 2020-07-06
 ### Fixed
-- **Logger**: Fix a bug with `inject_lambda_context` causing existing an Logger keys to be overridden if `structure_logs` was called before
+- **Logger**: Fix a bug with `inject_lambda_context` causing existing Logger keys to be overridden if `structure_logs` was called before
 
 ## [1.0.0] - 2020-06-18
 ### Added