message: docs(changelog): fix broken link in CHANGELOG
  When pasting over the 9.1.8 release notes,
  the link for 10.0.0-next.9 was accidentally
  cut off. This commit fixes the broken link for
  10.0.0-next.9 in the CHANGELOG.
diff: * **router:** update type for routerLink to include null and undefined ([#37018](https://github.com/angular/angular/issues/37018)) ([7de7871](https://github.com/angular/angular/commit/7de7871)), closes [#13380](https://github.com/angular/angular/issues/13380) [#36544](https://github.com/angular/angular/issues/36544)
  -10.0.0-next.9"></a>
  +<a name="10.0.0-next.9"></a>
  # [10.0.0-next.9](https://github.com/angular/angular/compare/10.0.0-next.8...10.0.0-next.9) (2020-05-19)
  