Ubuntu 25.04 is out of support [1], and Ubuntu 25.10 is the latest
supported one.

Moreover, Ubuntu 25.10 is the first that provides a recent enough Rust
given the minimum bump -- they provide 1.85.1 [2].

Thus update it.

Link: https://ubuntu.com/about/release-cycle [1]
Link: https://packages.ubuntu.com/search?keywords=rustc&searchon=names&exact=1&suite=all&section=all [2]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 Documentation/rust/quick-start.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/rust/quick-start.rst b/Documentation/rust/quick-start.rst
index 54fe491deb7d..34c39f208333 100644
--- a/Documentation/rust/quick-start.rst
+++ b/Documentation/rust/quick-start.rst
@@ -90,7 +90,7 @@ they should generally work out of the box, e.g.::
 Ubuntu
 ******
 
-25.04
+25.10
 ~~~~~
 
 The latest Ubuntu releases provide recent Rust releases and thus they should
-- 
2.53.0