🚀 Feature

Quick issue to add the links to reinit__is_reduced and sync_all_reduce in the docs: https://pytorch.org/ignite/metrics.html#metrics-and-distributed-computations

In addition, please check if reinit__is_reduced and sync_all_reduce are used elsewhere in the docs and do not contain a link to their docs.

For Hacktoberfest contributors, feel free to ask questions for details if any and say that you would like to tackle the issue.
Please, take a look at CONTRIBUTING guide.