[librsvg: 3/4] Use the library icon for the Rust API docs

[Marge Bot <marge-bot src gnome org>]

commit 348efa22fec57730ad0ac7567497fbecaffe618d
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Sep 27 19:50:53 2022 -0500

    Use the library icon for the Rust API docs
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/755>

 src/lib.rs | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/lib.rs b/src/lib.rs
index d93f4ffba..56e71c800 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -136,6 +136,7 @@
 //! [SVG 1.1]: https://www.w3.org/TR/SVG11/
 //! [SVG 2]: https://www.w3.org/TR/SVG2/
 
+#![doc(html_logo_url = "https://gnome.pages.gitlab.gnome.org/librsvg/Rsvg-2.0/librsvg-r.svg";)]
 #![allow(rustdoc::private_intra_doc_links)]
 #![allow(clippy::clone_on_ref_ptr)]
 #![allow(clippy::not_unsafe_ptr_arg_deref)]