added point cloud keyword to window detection demo

public/content/content.json

@@ -35,7 +35,7 @@
       "project_year_end": "2021",
       "project_is_on_going": false,
       "imageLink":"https://urbanvis.hft-stuttgart.de/imgs/thumbnails/EssenPC.jpg",
-      "keywords":["CityGML", "Urban Simulation","SimStadt"],
+      "keywords":["CityGML", "Urban Simulation","SimStadt", "Point Clouds"],
       "description_en":"As part of Simstadt 2.0, a method was developed to automatically extract window contours from building facedes from high-resolution point clouds to improve simulation accuracy.",
       "description_de":"Im Rahmen von Simstadt 2.0 wurde eine Methode entwickelt, um Fensterkonturen automatisiert in hochauflösenden Punktwolken zu detektieren und zu extrahieren, um die Simulationsgenauigkeit zu erhöhen."
     },