* able fill pull request title by template from md file
* fix: unusedresult: result of fmt.Sprintf call not used (from govet)
* fix: remove import fmt -> not used
* after review / PullRequestTitleTemplateCandidates moved to after line 39
* Update pull.go
* Update pull.go
Co-authored-by: ᴜɴᴋɴᴡᴏɴ <u@gogs.io>