Update README.md

Author: naraesk

README.md

@@ -16,11 +16,11 @@ Getaviz is a toolset for designing, generating, and exploring software visualiza
 [![x3dom](https://img.shields.io/badge/3D-x3dom-blue.svg)](https://www.x3dom.org/)
 [![aframe](https://img.shields.io/badge/3D-A--Frame-blue.svg)](https://aframe.io/)
 [![aframe](https://img.shields.io/badge/VR-HTC_Vive-blue.svg)](https://www.vive.com/)
-* Supported visualization metaphors: 
+* Supported visualization metaphors:  
 [![Recursive Disk](https://img.shields.io/badge/2D-Recursive%20Disk-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/RD%20freemind&model=RD%20freemind)  
-[![City](https://img.shields.io/badge/3D-City-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20original%20freemind)  
-[![City Bricks](https://img.shields.io/badge/3D-City%20Bricks-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20bricks%20freemind)  
-[![City Floors](https://img.shields.io/badge/3D-City%20Floors-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20floor%20freemind)  
+[![City](https://img.shields.io/badge/3D-City-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20original%20freemind)
+[![City Bricks](https://img.shields.io/badge/3D-City%20Bricks-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20bricks%20freemind)
+[![City Floors](https://img.shields.io/badge/3D-City%20Floors-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20floor%20freemind)
 [![City](https://img.shields.io/badge/3D-City-blue.svg)](https://home.uni-leipzig.de/svis/getaviz/index.php?setup=web/City%20freemind&model=City%20original%20freemind)  
   * and many others