Make the about windows text more readable

src/interface/Interface_graphic.cpp

@@ -863,7 +863,16 @@ void Interface_graphic::on_about_triggered(){
                           VITE_DATE
                           "</i>.<br /><br />"
                           "Under the CeCILL A licence. The content can be found <a href=\"http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt\">here</a>."
-                          "<p><b>Developers:</b><ul><li>Kevin COULOMB</li><li>Mathieu FAVERGE</li><li>Johnny JAZEIX</li><li>Olivier LAGRASSE</li><li>Jule MARCOUEILLE</li><li>Pascal NOISETTE</li><li>Arthur REDONDY</li><li>Cl&eacute;ment VUCHENER</li></ul></p>"
+                          "<p><b>Developers:</b><ul>"
+                          "<li>Kevin COULOMB</li>"
+                          "<li>Mathieu FAVERGE</li>"
+                          "<li>Johnny JAZEIX</li>"
+                          "<li>Olivier LAGRASSE</li>"
+                          "<li>Jule MARCOUEILLE</li>"
+                          "<li>Pascal NOISETTE</li>"
+                          "<li>Arthur REDONDY</li>"
+                          "<li>Cl&eacute;ment VUCHENER</li>"
+                          "</ul></p>"
                           "The main page project is: <a href=\""
                           VITE_WEBSITE
                           "\">"