Fix changelog icon CSS to only target sidebar links (#1354)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Kapil Gowru <[email protected]>

Author: devin-ai-integration[bot]

fern/assets/styles.css

@@ -1104,6 +1104,6 @@ h1, h2, h3 {
 /*** END -- FERN EDITOR STYLING ***/
 
 /* HACK: hide the changelog icon for changelog pages */
-a[href$="changelog"] svg {
+.fern-sidebar-link[href$="changelog"] > svg {
   display: none;
-}
+}