Update README.md

Signed-off-by: Fabiana  ⚡️ Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

@@ -129,7 +129,7 @@ Enable students to **plan, conduct, and complete a research project** applying k
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 | 1    | [Course introduction](https://github.com/Quantum-Software-Development/specialized-consulting-data-mining/tree/d737ff164c6b4d6e580d5ba6e95c54ac604f7ea4/class_1-Introduction) | Active methodology | – |
 | 2–3 | [Review of statistical methods](https://github.com/Quantum-Software-Development/class_2-and-3-intro-data-mining-python) | Active methodology | Python |
-| 4 | [Fundamentals of Data Mining | Active methodology](https://github.com/Quantum-Software-Development/4-DataMining_Concepts_ExploratoryAnalysis) | Python |
+| 4 | [Fundamentals of Data Mining](https://github.com/Quantum-Software-Development/4-DataMining_Concepts_ExploratoryAnalysis) | Active methodology | Python |
 | 5–6 | Data cleaning and preparation | Active methodology | Python |
 | 7 | Predictive analysis | Active methodology | Python |
 | 8, 10 | Clustering techniques | Active methodology | Python |