Updated the documentation for `SetLimit` and `Go` functions in the
`errgroup` package. the note clarifies the behavior when the semaphore
limit is set to zero, which could lead to a deadlock if not handled
properly. the updated documentation warns users to set a positive
semaphore limit to avoid blocking goroutines and potential deadlock

this change improves the clarity of API and helps users understand how
to properly use the semaphore limit to prevent issues in concurrent
execution

Change-Id: Ie62acc38ef804b3590c04bddba00a3cce21e8cef
Reviewed-on: https://go-review.googlesource.com/c/sync/+/642215
Reviewed-by: Michael Knyszek <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>

By now Go 1.24.0 has been released, and Go 1.22 is no longer supported
per the Go Release Policy (https://go.dev/doc/devel/release#policy).

For golang/go#69095.

[git-generate]
(cd . && go get [email protected] && go mod tidy && go fix ./... && go mod edit -toolchain=none)

Change-Id: I7e3b1e073a0a64e82e2b9e49387d5da0afd9d58b
Reviewed-on: https://go-review.googlesource.com/c/sync/+/649835
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Auto-Submit: Gopher Robot <[email protected]>

Change-Id: I7de5dfae21c4ffe31d6c16e3df0fed3e2269cb16
Reviewed-on: https://go-review.googlesource.com/c/sync/+/654421
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Commit-Queue: Ian Lance Taylor <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>