[5.x.x] NotesApi: fix createMergeRequestNote() API breakage introduced in 5.8.0#1305

peat-psuwit wants to merge 1 commit intogitlab4j:5.x.xgitlab4j/gitlab4j-api:5.x.xfrom

peat-psuwit:for-upstream/5.x.x_-_unbreak-createMergeRequestNotepeat-psuwit/gitlab4j-api:for-upstream/5.x.x_-_unbreak-createMergeRequestNoteCopy head branch name to clipboard