Update README.md

Author: takezoe

README.md

@@ -4,7 +4,7 @@ This is an example of GitBucket plug-in. This plug-in provides code snippet repo
 
 Plugin version | GitBucket version
 :--------------|:--------------------
-4.0.x          | 4.0.x, 4.1.x
+4.0.x          | 4.0.x, 4.1.x, 4.2.x
 3.13.x         | 3.13.x
 3.12.x         | 3.12.x
 3.11.x         | 3.11.x