close parenthesis and fix bibtex entry

Generator/doc_tex/Generator/PkgDescription.tex

@@ -1,10 +1,10 @@
 \begin{ccPkgDescription}{Geometric Object Generators\label{Pkg:Generators}}
-\ccPkgHowToCiteCgal{cgal:cfw-cbgl-07}
+\ccPkgHowToCiteCgal{cgal:hhk-gog-07}
 
 \ccPkgSummary{This package provides a variety of generators for geometric objects.
 They are useful as synthetic test data sets, e.g.~for testing
 algorithms on degenerate object sets and for performance analysis.
-
+}
 
 \ccPkgIntroducedInCGAL{1.0}
 \ccPkgLicense{\ccLicenseLGPL}