Update tutorial-data-science-create-report.md

[keayachi]

After testing the initial expression in the data science lab, an error occurred while loading the "Germany Churn," "France Churn," and "Spain Churn" measures to the dashboard. The error message indicated an incompatibility between boolean and integer data types when comparing values in the "Geography_Country" columns.

Investigation revealed the DAX expressions required consideration of boolean data types in the 'Geography' columns.

So replacing =1 by =True() in each DAX expression.

The pull request addresses this by modifying the expressions to handle boolean values appropriately. This change has resolved the loading error, and the column visual comparing churn rates across the three countries now functions correctly.

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[Jak-MS]

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