fixed another typo

Author: oseiskar

COPYRIGHT.md

@@ -5,8 +5,7 @@
    - [three.js](https://threejs.org) + components `Detector.js`, `OrbitControls.js` and the moon texture `img/moon_1024.jpg`
    - [stats.js](https://github.com/mrdoob/stats.js)
    - [mustache.js](https://github.com/janl/mustache.js)
-   - [ShaderLoader.js](https://github.com/codecruzer/webgl-shader-loader-js))
-   -
+   - [ShaderLoader.js](https://github.com/codecruzer/webgl-shader-loader-js)
  * The Milky Way image `img/milkyway.jpg` is from http://www.stellarium.org/wiki/index.php/Textures and "based on Nick Risinger's [Photopic Sky Survey](http://skysurvey.org/) image under [CC-BY-NC. Details](http://creativecommons.org/licenses/by-nc/2.0/)."
  * `index.html` also adapted from three.js
  * Other material (C) Otto Seiskari, 2015