docs(action): fix link to WaitForFunc (#429) [Backport release-1.x] (#…

…434)

Link was not working properly in current `main`:

https://pkg.go.dev/github.com/hetznercloud/hcloud-go/v2/hcloud@v2.7.3-0.20240503164107-1e3fa7033d8a#ActionClient.WaitFor

(cherry picked from commit 94229eb)

BEGIN_COMMIT_OVERRIDE
docs(action): fix link to WaitForFunc
END_COMMIT_OVERRIDE

Co-authored-by: Julian Tölle <julian.toelle@hetzner-cloud.de>

hcloud/action_waiter.go

@@ -101,7 +101,7 @@ func (c *ActionClient) WaitForFunc(ctx context.Context, handleUpdate func(update
 // If a single action fails, the function will stop waiting and the error set in the
 // action will be returned as an [ActionError].
 //
-// For more flexibility, see the [WaitForFunc] function.
+// For more flexibility, see the [ActionClient.WaitForFunc] function.
 func (c *ActionClient) WaitFor(ctx context.Context, actions ...*Action) error {
 	return c.WaitForFunc(
 		ctx,