fix: wrong space in comma, and change the text to sign up in the button

[prodesert22]

SUMMARY

• Fixed wrong space in comma
• Change the text to sign up in the button

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[josedev-union]

it is failing because Pedro created a PR from his personal repo and we don't expose github action secrets for such PRs.