Update Bug.md
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typo
aivus/doctrine2,Majkl578/doctrine2,TomasVotruba/doctrine2,aivus/doctrine2,holtkamp/doctrine2,holtkamp/doctrine2,PowerKiKi/doctrine2,lcobucci/doctrine2,Majkl578/doctrine2,TomasVotruba/doctrine2,PowerKiKi/doctrine2,lcobucci/doctrine2