improve citation display

README.md

@@ -62,7 +62,7 @@ Note: The first version of HAREM is already available in the huggingface hub [he
 
 
 ## Citations
-
+```
 @inproceedings{freitas-etal-2010-second,
     title = "Second {HAREM}: Advancing the State of the Art of Named Entity Recognition in {P}ortuguese",
     author = "Freitas, Cl{\'a}udia  and
@@ -77,7 +77,9 @@ Note: The first version of HAREM is already available in the huggingface hub [he
     publisher = "European Language Resources Association (ELRA)",
     url = "http://www.lrec-conf.org/proceedings/lrec2010/pdf/412_Paper.pdf"
 }
+```
 
+```
 @misc{fabiocapsouza2020,
   author = {fabiocapsouza},
   title = {harem_preprocessing},
@@ -86,4 +88,5 @@ Note: The first version of HAREM is already available in the huggingface hub [he
   journal = {GitHub repository},
   howpublished = {\url{https://github.com/fabiocapsouza/harem_preprocessing}},
   commit = {30083a542390094d84ec45116085ab71ceb1442c}
-}
+}
+```