changed readme

Author: arpoe

.DS_Store

@@ -101,11 +101,11 @@ If you have any questions, please use the anonymous etherpad (see email) or open
   * [Hypothesis testing (slides)](09_hypothesis_testing/Stats3.pdf)
   * [Non-parametric testing](09_hypothesis_testing/stats4.ipynb)
 * Multiple comparisons and correlations (2022-Jun-21)
-  * [Correlation (slides)](10_correlation_dim_reduction/Stats5.pdf)
-  * [Correlation](10_correlation_dim_reduction/Correlations.ipynb)
+  * [Multiple comparisons and Correlation (slides)](10_correlation_dim_reduction/Stats5.pdf)
+  * [Multiple comparisons and Correlation](10_correlation_dim_reduction/Correlations.ipynb)
 * Big data, clustering, dimensionality reduction (2022-Jun-28)
   * [Dimensionality reduction (slides)](10_correlation_dim_reduction/Stats_dimred.pdf)
-  * [PCA and UMAPs](10_correlation_dim_reduction/PCA_UMAP.ipynb)
+  * [PCA](10_correlation_dim_reduction/PCA.ipynb)
 * Deep learning (2022-Jul-5)
   * [Image Restoration](11_deep_learning/01-Image-Restoration.ipynb)
   * [Image Segmentation](11_deep_learning/02-Image-Semantic-Segmentation.ipynb)