doc news: fix percona server version (#373)
doc news: fix percona server version (#373)

Co-authored-by: shimozawa.hiroki <554c0a95c5de32f3c3d363f6349eacfcc16b4c36@misou.co.jp>
mroonga/mroonga,mroonga/mroonga,mroonga/mroonga,mroonga/mroonga