fix full changelog link
- Add metric names to pr curve charts in tensorboard by @vanpelt in https://github.com/wandb/client/pull/2822
-**Full Changelog**: https://github.com/wandb/client/compare/v0.12.5...0.12.6
+**Full Changelog**: https://github.com/wandb/client/compare/v0.12.5...v0.12.6
## 0.12.5 (October 19, 2021)
