fix appstream validation errors

org.zotero.Zotero.appdata.xml

@@ -12,13 +12,7 @@
       organize, cite, and share your research sources.
     </p>
     <p>
-      NOTE: If your Zotero folder is not located inside your home directory (~/)
-      and is outside your xdg-user-dirs, please grant permission to access that
-      folder by the flatpak-override command (usage:
-      "flatpak override --user --filesystem=/PATH/TO/ZOTEROFOLDER org.zotero.Zotero").
-    </p>
-    <p>
-      NOTE: This wrapper is not verified by, affiliated with, or supported by the Zotero project.
+      NOTE: This flatpak is not verified by, affiliated with, or supported by the Zotero project.
     </p>
   </description>
   <categories>
@@ -30,7 +24,6 @@
   <url type="help">https://www.zotero.org/support/</url>
   <url type="translate">https://www.zotero.org/support/dev/localization</url>
   <launchable type="desktop-id">org.zotero.Zotero.desktop</launchable>
-  <developer_name>Corporation for Digital Scholarship</developer_name>
   <update_contact>guillaumepoiriermorency@gmail.com</update_contact>
   <releases>
     <release version="6.0.35" date="2024-03-04"/>