Fix CLI path

[Mrtenz]

bin was pointing to dist/cli.js which no longer exists after #226, causing the CLI to break:

$ yarn changelog:validate
node:internal/modules/cjs/loader:1228
  throw err;
  ^

Error: Cannot find module './node_modules/@metamask/auto-changelog/dist/cli.js'
    at Module._resolveFilename (node:internal/modules/cjs/loader:1225:15)
    at Module._load (node:internal/modules/cjs/loader:1051:27)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:173:12)
    at node:internal/main/run_main_module:28:49 {
  code: 'MODULE_NOT_FOUND',
  requireStack: []
}

[cryptodev-2s]

LGTM!