rust: macros: fix commit reference style

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Author: ojeda

rust/macros/module.rs

@@ -431,7 +431,7 @@ pub(crate) fn module(ts: TokenStream) -> TokenStream {
 
                 // Note: the C macro that generates the static structs for the `__param` section
                 // asks for them to be `aligned(sizeof(void *))`. However, that was put in place
-                // in 2003 in commit 38d5b085d2 (\"[PATCH] Fix over-alignment problem on x86-64\")
+                // in 2003 in commit 38d5b085d2a0 (\"[PATCH] Fix over-alignment problem on x86-64\")
                 // to undo GCC over-alignment of static structs of >32 bytes. It seems that is
                 // not the case anymore, so we simplify to a transparent representation here
                 // in the expectation that it is not needed anymore.