refactor(@schematics/update): missing space in usageMessage output (angular#15786)

Fixes angular#15784

Author: Splaktar

packages/schematics/update/update/index.ts

@@ -489,7 +489,7 @@ function _usageMessage(
  command += ' --next';
  }
 
- return [name, `${info.installed.version} -> ${version}`, command];
+ return [name, `${info.installed.version} -> ${version} `, command];
  })
  .filter(x => x !== null)
  .sort((a, b) => a && b ? a[0].localeCompare(b[0]) : 0);