mohammed firdous

PipeCD - Documentation Quality Improvements

Fixed spelling and grammar issues across multiple documentation files in PipeCD, improving clarity and professionalism for the CNCF Sandbox project.

I cleaned up documentation quality across PipeCD by fixing spelling, grammar, and naming inconsistencies in 25 files.

This included corrections like manifiestsmanifests, capitalization fixes for terms such as Kubernetes/EventWatcher, and tense/article cleanup that affected readability.

It was a straightforward docs-quality pass, but it improved clarity for users and contributors reading core docs.

Links: PR #6361Issue #6357