Update src/doc/rustc/src/codegen-options/index.md

Co-authored-by: Eric Huss <[email protected]>

Author: rcvalle

Diff for: src/doc/rustc/src/codegen-options/index.md

@@ -527,7 +527,7 @@ bug detection, improving software reliability and security.
 This option allows for use of one or more of these sanitizers:
 
   * [AddressSanitizer
-    (ASan)](https://doc.rust-lang.org/rustc/sanitizers.html#addresssanitizer):
+    (ASan)](../sanitizers.md#addresssanitizer):
     Detects memory errors (e.g., buffer overflows, use after free).
   * [LeakSanitizer
     (LSan)](../sanitizers.md#leaksanitizer):