* #347 - Rework the "About the Java Track" page 

Page re-written to be more friendly and accessible.

* Rework the "About the Java Track" page

Rework the "About the Java Track" page
Page re-written to be more friendly and accessible.

* Rework the "About the Java Track" page

Rework the "About the Java Track" page.
Page re-written to be more friendly and accessible, included suggestions made by FridaTveit.

Java is not an acronym or an abbreviation, it should not be written in all-caps (doing so encourages the misunderstanding further, especially as exerscism.io is aimed at newbies!).

Fix spacing around punctuation.
Expand out acronyms first and add contraction in parens.
Adjust list of built-ins.

made the changes in the file.