fix(tags): libelle with double dash, becomes double underscore. no worries it was already broken

app/models/concerns/tags_substitution_concern.rb

@@ -19,6 +19,7 @@ module TagsSubstitutionConcern
         .sub(/[[:space:]]+$/, '')
         .gsub(/[[:space:]]/, ' ')
         .gsub(' ', ' ')
+        .gsub(/--/, '__')
     end
 
     define_combinator :doc do

spec/models/concern/tags_substitution_concern_spec.rb

@@ -211,7 +211,7 @@ describe TagsSubstitutionConcern, type: :model do
       end
 
       context 'and they are used in the template' do
-        let(:template) { "--bon pote -- c'est top--" }
+        let(:template) { "--bon pote __ c'est top--" }
 
         context 'and their value in the dossier are not nil' do
           before do