Correct incorrect prop

Author: DilsonsPickles

src/pages/post-download.astro

@@ -22,7 +22,7 @@ import FeatureCard from "../components/card/FeatureCard";
         <div class="mt-12">
           <JoinAudioDotComButton
             href="https://audio.com/auth/sign-up?mtm_campaign=audacityteamorg&mtm_content=post_download_button"
-            matomoEventAction="post-download CTA"
+            matomoEventName="post-download CTA"
             large
           />
         </div>