minor fixes

README.rst

@@ -40,9 +40,7 @@ run the experiment and execute function `plot_random(N=256)` from
 To reproduce the second experiment, the bottom plot of Figure 1 and Figure 2
 (target matrix is composed of data from MNIST),
 
-* download and locally extract the data from the `UCI
-repository<https://archive.ics.uci
-.edu/ml/datasets/Optical+Recognition+of+Handwritten+Digits>`_
+* download and locally extract the data from the `UCI repository <https://archive.ics.uci.edu/ml/datasets/Optical+Recognition+of+Handwritten+Digits>`_
 * run file `extract_matrices_from_datasets.py` after adapting path variable `root_dir` depending on the location of your data
 * run file `exp_icassp_data_matrices.py`.
 * execute function `plot_digits()` from `sigma_faust.plot_icassp_results` module to display the results.