Update canadian-journal-of-fisheries-and-aquatic-sciences.csl

add issue number in parenthesis

reported https://forums.zotero.org/discussion/43487/style-error-canadian-journal-of-fisheries-and-aquatic-sciences/
Merge pull request #1287 from zuphilip/patch-2

Update canadian-journal-of-fisheries-and-aquatic-sciences.csl