After adding a warning for `{@link}` tags that refer to private/protected types, we see these warnings when building javadoc.
```
src/java.base/share/classes/java/math/BigDecimal.java:108: warning: reference to non-visible type: scale (use -protected or -private options to document non-public types)
 * hold. The results of methods like {@link scale} and {@link
```

It should probably be `scale()`