Doc fix tag for 3.0.1 release

🚢 ehcache#1034 Release Ehcache 3.0.1

Issue ehcache#975 Release Ehcache 3.0.0 GA

Issue ehcache#953 Release RC3

Issue ehcache#899 Ehcache 3 RC2

Issue ehcache#839 Release candidate 1 - 3.0.0.rc1

Release milestone 5 - 3.0.0.m5

Issue ehcache#680 Release 3.0.0.m4

Issue ehcache#600 Release 3.0.0.m3

Release 3.0.0.m2