Apply suggestion from @GuillaumeGomez

Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>

Author: yotamofek

src/librustdoc/display.rs

@@ -101,8 +101,7 @@ impl<T: Display> Wrapper<T> {
         fmt::from_fn(move |f| {
             self.prefix.fmt(f)?;
             content(f)?;
-            self.suffix.fmt(f)?;
-            Ok(())
+            self.suffix.fmt(f)
         })
     }