fix: broken link (#8409)

* Update data-types@5g9mmi01WeZ4aDqNzwx_V.md

* Update data-types@5g9mmi01WeZ4aDqNzwx_V.md

* Update src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md

---------

Co-authored-by: Arik Chakma <arikchangma@gmail.com>

src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md

@@ -11,3 +11,4 @@ Visit the following resources to learn more:
 
 - [@article@Java Data Types](https://jenkov.com/tutorials/java/variables.html)
 - [@article@What are Data Types & Variables?](https://jenkov.com/tutorials/java/data-types.html)
+- [@article@Java Variables](https://www.tpointtech.com/java-variables)