Fix typo: change 'NUL' to 'nul' in documentation

hxuhack · hxuhack · commit a54ceaa8bea8 · 2026-03-07T17:01:28.000+08:00
diff --git a/library/alloc/src/ffi/c_str.rs b/library/alloc/src/ffi/c_str.rs
@@ -323,7 +323,7 @@ impl CString {
     ///
     /// # Safety
     ///
-    /// The caller must ensure `v` contains no NUL bytes in its contents.
+    /// The caller must ensure `v` contains no nul bytes in its contents.
     ///
     /// # Examples
     ///
