Update description for string type in Standard Library Types documentation section

[15498th]

Change Summary

Remove sentence about coercion of numeric types to str.

According to #6045, coercion int->str is not supported in v2, yet https://docs.pydantic.dev/latest/usage/types/standard_types/ states:

Strings are accepted as-is. int, float, and Decimal are coerced using str(v). bytes and bytearray are converted using v.decode(). Enums inheriting from str are converted using v.value. All other types cause an error. See String Types for more details.

String types section (https://docs.pydantic.dev/latest/usage/types/string_types/) it links to seems to be correct in this regard.

Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[samuelcolvin]

LGTM. Thanks so much.

@davidhewitt since you're on open source today, please could you check the enum bit of the sentence is right too.

[davidhewitt]

Confirmed (which includes StrEnum from Python 3.11).