Fixed: BuildBot status Badge, use a link to BuildBot pages rather than to images

Changes the link to the BuilBot status badge in README.adoc

We more depend on FrameworkPlugins build than Framework alone so I rather used
https://ci2.apache.org/#/builders?tags=%2BofbizTrunkFrameworkPlugins
Also because it's clearer in code that it's about FrameworkPlugins
From there it's then easy to get to https://ci2.apache.org/#/builders/46 which
has more information

Thanks: Daniel for the initial suggestion
1 file changed