misc: fix typo

.github/ISSUE_TEMPLATE/2-feature-request.md

 
 Please fill in as much of the template below as you're able.
 
-Note that the ultimate decission for implementing features lies on the Jitsi team, not all feature requests shall be accepted.
+Note that the ultimate decision for implementing features lies on the Jitsi team, not all feature requests shall be accepted.
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 **Is your feature request related to a problem you are facing?**