Changes
rm alt text on icon, since the adjacent text is sufficient alternative text (per edit request)
-- cfg['documentation-icon-wikitext']
-- The wikitext for the icon shown at the top of the template.
cfg['documentation-icon-wikitext'] = '[[File:Test TemplateInfo-infoIcon - Version (2).pngsvg|50px|link=|alt=]]'
-- cfg['template-namespace-heading']
-- cfg['print-blurb']
-- Text to display if a /Print subpage exists. $1 is a link to the subpage with a display value of cfg['print-link-display'].
cfg['print-blurb'] = 'A [[Help:Books/for experts#Improving the book layout|print version ]] of this template exists at $1.'
.. ' If you make a change to this template, please update the print version as well.'