docs(pipes): improve zod examples

[LucasHang]

• For TS, use ZodSchema interface instead of ZodObject as value type (this way satisfying all zod schemas constructions. For example, when using refine() the schema type become ZodEffects instead of ZodObject)
• For Both, returns the parsed value of the schema, this way applying the zod strip(), equivalent to class-transform whitelist.
• For JS, fixes Pipe name (there was a missing "e" at the end of the name) and removes unused ZodObject import

PR Checklist

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PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Docs
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[kamilmysliwiec]

lgtm