doc: rephrase text of child_process.execSync()

doc: rephrase text of child_process.execSync() · nodejs/node@7546eef

Original file line number	Diff line number	Diff line change
@@ -611,8 +611,8 @@ the `SIGTERM` signal and does not exit, the parent process will still wait
`611`	`611`	`until the child process has exited.*`
`612`	`612`
`613`	`613`	`If the process times out, or has a non-zero exit code, this method *will*`
`614`		-throw. The [`Error`][] object will contain the entire result from
`615`		-[`child_process.spawnSync()`][]
	`614`	+throw an [`Error`][] that will include the full result of the underlying
	`615`	+[`child_process.spawnSync()`][].
`616`	`616`
`617`	`617`	`### child_process.execSync(command[, options])`
`618`	`618`	`<!-- YAML`