Fix version typo in announce for 3.0.2
Fix version typo in announce for 3.0.2

etataurov/pytest,ddboline/pytest,nicoddemus/pytest,tomviner/pytest,nicoddemus/pytest,hpk42/pytest,pytest-dev/pytest,hpk42/pytest,skylarjhdownes/pytest,markshao/pytest,txomon/pytest,RonnyPfannschmidt/pytest,MichaelAquilina/pytest,rmfitzpatrick/pytest,pfctdayelise/pytest,Akasurde/pytest,davidszotten/pytest,tgoodlet/pytest,tareqalayan/pytest,hackebrot/pytest,vmalloc/dessert,alfredodeza/pytest,flub/pytest,malinoff/pytest,eli-b/pytest,jaraco/pytest,The-Compiler/pytest,The-Compiler/pytest,tomviner/pytest