feat(Slack): add repository info in main text

Author: jaychang99

src/services/slack.ts

@@ -121,7 +121,7 @@ export class Slack {
 
     const res = await this.client.chat.postMessage({
       channel: this.channelId,
-      text: mainText,
+      text: `${mainText} at ${this.githubConfig.repository}`,
       attachments: [
         {
           color,

src/utils/validate-input.ts

@@ -4,7 +4,7 @@ import * as core from '@actions/core'
 import { getFileFromBranch } from '@/utils/get-file-from-branch'
 
 const DEFAULT_OPENAPI_FILE_PATH = 'openapi.json'
-const MOCKUP_REPOSITORY = '/mockup_owner/mockup_repo'
+const MOCKUP_REPOSITORY = 'mockup_owner/mockup_repo'
 const MOCKUP_SHA = 'mockup123_sha'
 const MOCKUP_MESSAGE = 'mockup message for testing'