Fix README.

README.rst

@@ -60,27 +60,33 @@ Citing dcor
 ===========
 Please, if you find this software useful in your work, reference it citing the following paper:
 
-@article{ramos-carreno+torrecilla_2023_dcor,
-  author = {Ramos-Carreño, Carlos and Torrecilla, José L.},
-  doi = {10.1016/j.softx.2023.101326},
-  journal = {SoftwareX},
-  month = {2},
-  title = {{dcor: Distance correlation and energy statistics in Python}},
-  url = {https://www.sciencedirect.com/science/article/pii/S2352711023000225},
-  volume = {22},
-  year = {2023},
-}
+.. code-block::
+  
+  @article{ramos-carreno+torrecilla_2023_dcor,
+    author = {Ramos-Carreño, Carlos and Torrecilla, José L.},
+    doi = {10.1016/j.softx.2023.101326},
+    journal = {SoftwareX},
+    month = {2},
+    title = {{dcor: Distance correlation and energy statistics in Python}},
+    url = {https://www.sciencedirect.com/science/article/pii/S2352711023000225},
+    volume = {22},
+    year = {2023},
+  }
 
 You can additionally cite the software repository itself using:
 
-@misc{ramos-carreno_2022_dcor,
-  author = {Ramos-Carreño, Carlos},
-  doi = {10.5281/zenodo.3468124},
-  month = {3},
-  title = {dcor: distance correlation and energy statistics in Python},
-  url = {https://github.com/vnmabus/dcor},
-  year = {2022}
-}
+.. code-block::
+
+  @misc{ramos-carreno_2022_dcor,
+    author = {Ramos-Carreño, Carlos},
+    doi = {10.5281/zenodo.3468124},
+    month = {3},
+    title = {dcor: distance correlation and energy statistics in Python},
+    url = {https://github.com/vnmabus/dcor},
+    year = {2022}
+  }
+
+If you want to reference a particular version for reproducibility, check the version-specific DOIs available in Zenodo.
 
 Documentation
 =============