Remove redundant check name in anchor

[stoyanK7]

After an xdoc page is split, the individual check pages are left with anchors like .../checks/annotation/annotationlocation.html#AnnotationLocation_Description

checkstyle/src/xdocs/checks/annotation/annotationlocation.xml

Line 12 in fbbf38a

<subsection name="Description" id="AnnotationLocation_Description">

We can shorten the id to just Description and have a nice link to /checks/annotation/annotationlocation.html#Description

[stoyanK7]

#13237 (comment)

This should be a complete match when the hrefs are fixed.

section[id$="Properties"] .wrapper .bodyTable tr td:first-child { selector in site.css should be changed to an exact match to Properties instead of ends with