doc: make encoding table in util.md leaner
This removes '
symbols in the encoding table to reduce the distractions and the line count when rendered.
Change the Markdown representation of the table to reduce the line length when viewed as a Markdown code.
Before: https://github.com/nodejs/node/blob/master/doc/api/util.md#encodings-supported-by-default After: https://github.com/ChALkeR/io.js/blob/util-leaner-doc/doc/api/util.md#encodings-supported-by-default
Also, I would prefer if the first column was wider to fit the main encoding names, but the
-based solution is too ugly in Markdown code, so this could better be fixed on the css side on the website, if needed.
/cc @jasnell