Updated README file

CreditRiskPrediction/Docs/README.md

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+# Documents
+
+* **blog** blog post of the credit risk prediction analysis introduced in this repo. 

EmployeeAttritionPrediction/Docs/README.md

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 # Documents
 
-* **blog** blog post of the employee attrition prediction analysis introduced in this repo. 
+* **blog** blog post of the employee churn prediction analysis introduced in this repo.