[clang-tools-extra] [clang-doc] add return comments to comment template (PR #150647)

[Erick Velez via cfe-commits]

evelez7 wrote:

> @evelez7 Do you have more details on what exactly you did within Graphite? Did you try to merge multiple PRs in a stack or just the bottom one?

I started a stack merge of 3 PRs starting with #150570 and this was supposed to be the 2nd one. The third PR is currently waiting for CI.

I just submitted a bug report/feedback via Graphite. This seems like a pretty big problem for Graphite in LLVM so I was even wondering if merging stacks should be disabled if possible.

https://github.com/llvm/llvm-project/pull/150647