entities.md in power_stencil-0.4.15

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 [Pry]: https://github.com/pry/pry "The awesome Pry console"
 [ActiveRecord]: https://guides.rubyonrails.org/active_record_basics.html "The ultimate ORM"
 [Ruby On Rails]: https://rubyonrails.org/ "One of the best Web framework"
 [universe_compiler]: https://gitlab.com/tools4devops/universe_compiler "The underlying engine to manage entities and compilation !"
 [`universe_compiler` advanced relations documentation]: https://gitlab.com/tools4devops/universe_compiler#advanced-relations "Advanced relational features"
-[Graphviz]: (https://www.graphviz.org/) "Graph Visualization Software"
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+[Graphviz]: https://www.graphviz.org/ "Graph Visualization Software"