Update README.md

Author: OpenDEM

README.md

@@ -1,7 +1,7 @@
 # WikiMediaExtension3D_Test_GLB_Format
 Test Viewer for the integration of GLB files in the MediaWiki 3D Extension: https://www.mediawiki.org/wiki/Extension:3D
 
-You could choose from diffent free STL and GLB models, or upload your own data.
+You could choose from different free STL and GLB models, or upload your own data.
 
 Only simple GLB models and KTX2 compression is supported.