doc: fix checkstyle jar version in issue templates
doc: fix checkstyle jar version in issue templates

romani/checkstyle,checkstyle/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,rnveach/checkstyle