fix: remove extra spacing in dev store link message

- Removed newline character between message and link
- Link now appears on the same line as the message
- Fixes spacing issue identified in PR review

Author: amcaplan

packages/app/src/cli/utilities/developer-platform-client/app-management-client.ts

@@ -1050,7 +1050,6 @@ export class AppManagementClient implements DeveloperPlatformClient {
     const url = `https://${await developerDashboardFqdn()}/dashboard/${org.id}/stores`
     return [
       `Looks like you don't have any dev stores associated with ${org.businessName}'s Dev Dashboard.`,
-      '\n',
       {link: {url, label: 'Create one now'}},
     ]
   }

packages/app/src/cli/utilities/developer-platform-client/partners-client.ts

@@ -650,7 +650,6 @@ export class PartnersClient implements DeveloperPlatformClient {
     const url = `https://${await partnersFqdn()}/${org.id}/stores`
     return [
       `Looks like you don't have any dev stores associated with ${org.businessName}'s Partner Dashboard.`,
-      '\n',
       {link: {url, label: 'Create one now'}},
     ]
   }