Add new bib (documentation quality)

documentation-quality.bib

+@article{corazza2016coherence,
+  title={Coherence of comments and method implementations: a dataset and an 
+  empirical investigation},
+  author={Corazza, Anna and Maggio, Valerio and Scanniello, Giuseppe},
+  journal={Software Quality Journal},
+  pages={1--27},
+  year={2016},
+  publisher={Springer}
+}
+
+@article{arnaoudova2016linguistic,
+  title={Linguistic antipatterns: What they are and how developers perceive 
+  them},
+  author={Arnaoudova, Venera and Di Penta, Massimiliano and Antoniol, Giuliano},
+  journal={Empirical Software Engineering},
+  volume={21},
+  number={1},
+  pages={104--158},
+  year={2016},
+  publisher={Springer}
+}