docs: fix header in CONTRIBUTING (#902)
docs: fix header in CONTRIBUTING (#902)


zapov/pgjdbc,lordnelson/pgjdbc,whitingjr/pgjdbc,AlexElin/pgjdbc,lordnelson/pgjdbc,jkutner/pgjdbc,marschall/pgjdbc,golovnin/pgjdbc,panchenko/pgjdbc,marschall/pgjdbc,pgjdbc/pgjdbc,davecramer/pgjdbc,zemian/pgjdbc,sehrope/pgjdbc,golovnin/pgjdbc,zapov/pgjdbc,whitingjr/pgjdbc,AlexElin/pgjdbc,jorsol/pgjdbc,pgjdbc/pgjdbc,marschall/pgjdbc,sehrope/pgjdbc,zemian/pgjdbc,davecramer/pgjdbc,zapov/pgjdbc,marschall/pgjdbc,panchenko/pgjdbc,pgjdbc/pgjdbc,davecramer/pgjdbc,lordnelson/pgjdbc,whitingjr/pgjdbc,panchenko/pgjdbc,jorsol/pgjdbc,golovnin/pgjdbc,davecramer/pgjdbc,pgjdbc/pgjdbc,AlexElin/pgjdbc,sehrope/pgjdbc,zemian/pgjdbc,jorsol/pgjdbc,sehrope/pgjdbc,jkutner/pgjdbc,jorsol/pgjdbc,jkutner/pgjdbc