Updated index page

Author: katharinalisalin

docs/contributing/index.md

@@ -48,7 +48,7 @@ the documentation explains each process.
 
     Ask questions on our discussion board and get in touch with our community
 
-    [:octicons-arrow-right-24: Ask as question][ask a question]
+    [:octicons-arrow-right-24: Ask a question][ask a question]
 
 </div>