[PATCH 2/3] rust: print: use explicit link in documentation

[Miguel Ojeda <ojeda@kernel.org>]

The future `rustdoc` in the Rust 1.73.0 upgrade requires an explicit
link for `pr_info!`:

    error: unresolved link to `pr_info`
       --> rust/kernel/print.rs:395:63
        |
    395 | /// Use only when continuing a previous `pr_*!` macro (e.g. [`pr_info!`]).
        |                                                               ^^^^^^^^ no item named `pr_info` in scope
        |
        = note: `macro_rules` named `pr_info` exists in this crate, but it is not in scope at this link's location
        = note: `-D rustdoc::broken-intra-doc-links` implied by `-D warnings`

Thus do so to avoid a broken link while upgrading.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/kernel/print.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/kernel/print.rs b/rust/kernel/print.rs
index 8009184bf6d7..f48926e3e9fe 100644
--- a/rust/kernel/print.rs
+++ b/rust/kernel/print.rs
@@ -399,6 +399,7 @@ macro_rules! pr_debug (
 /// Mimics the interface of [`std::print!`]. See [`core::fmt`] and
 /// `alloc::format!` for information about the formatting syntax.
 ///
+/// [`pr_info!`]: crate::pr_info!
 /// [`pr_cont`]: https://www.kernel.org/doc/html/latest/core-api/printk-basics.html#c.pr_cont
 /// [`std::print!`]: https://doc.rust-lang.org/std/macro.print.html
 ///
-- 
2.42.0