Minor tweaks to release notes for Forms 13.3 and 14.1

[AndyButland]

Description

Minor tweaks to release notes for Forms 13.3 and 14.1 that I only noticed when reading after publication.

Type of suggestion

• [X] Typo/grammar fix
• [ ] Updated outdated content
• [ ] New content
• [ ] Updates related to a new version
• [ ] Other

Product & version (if relevant)

Forms 13.3 and 14.2

Deadline (if relevant)

Any time is fine.