Add missing space between error and exit code (#4696)

Fixes current output of `"Command terminated with non-zero exit code1"` to `"Command terminated with non-zero exit code 1"`

Co-authored-by: Bryan Kendall <[email protected]>

src/deploy/lifecycleHooks.ts

@@ -31,7 +31,7 @@ function runCommand(command: string, childOptions: childProcess.SpawnOptions) {
  if (signal) {
  reject(new Error("Command terminated with signal " + signal));
  } else if (code !== 0) {
- reject(new Error("Command terminated with non-zero exit code" + code));
+ reject(new Error("Command terminated with non-zero exit code " + code));
  } else {
  resolve();
  }