Merge branch 'patch-2020112557' into 'master'

wrong link name

See merge request core-services/r3lab/r3-pages!53

frozen/praqa.md

@@ -33,7 +33,7 @@ permalink: [doi:10.17881/j20h-pa27](https://doi.org/10.17881/j20h-pa27)
 
 {% rblock source code %}
 
-The source code for the program is available on [Gitlab](#https://github.com/CorradoAmeliLU/PRAQA).
+The source code for the program is available on [Github](https://github.com/CorradoAmeliLU/PRAQA).
 
 {% endrblock %}