Edited two files with this pull request. First is the addition to HeronExplanation.MD explaining how to use the program, modeled after the description found in the Slope explanation. I also moved the Wikipedia link to its own section, like it is in the Slope explanation as well.
The second change was two whitespace additions in the Heron.java file. This was to provide consistency as there was a whitespace on the second input, but not the first and third. This also provides some extra readability for users when inputting values.
Edited two files with this pull request. First is the addition to HeronExplanation.MD explaining how to use the program, modeled after the description found in the Slope explanation. I also moved the Wikipedia link to its own section, like it is in the Slope explanation as well.
The second change was two whitespace additions in the Heron.java file. This was to provide consistency as there was a whitespace on the second input, but not the first and third. This also provides some extra readability for users when inputting values.