PluginXdocGenerator doesn't handle correctly the Resource bundles and make typo in some languages

Actually, we have several grammar typos in French due to incorrect use of resource bundles.
For instance, take this key:

 
pluginxdoc.mojodescriptor.fullname=Full name

The Java code adds a tag and punctuation, i.e.

 
<strong>Full name</strong>:

in English, it is a correct display (no space before colon)
In French, it is an incorrect display (we need a space before colon)