## Summary

Resolves astral-sh#14976.

Currently, we uses this "[plain
scalar](https://yaml.org/spec/1.2.2/#733-plain-style)" format:

```yaml
description: Checks for `if key in dictionary: del dictionary[key]`.
```

Plain scalar must not contain the sequence `: `, however, so the above
is invalid.

This PR changes that to:

```yaml
description: |-
  Checks for `if key in dictionary: del dictionary[key]`.
```

`|` denotes a "[block
scalar](https://yaml.org/spec/1.2.2/#81-block-scalar-styles)", whereas
[the `-` chomping
indicator](https://yaml.org/spec/1.2.2/#8112-block-chomping-indicator)
requires that a trailing newline, if any, must be stripped.

## Test Plan


![](https://github.com/user-attachments/assets/f00b606a-d6fe-46ac-a1c5-6a8665204ea3)

* main: (25 commits)
  [`pydocstyle`] Skip leading whitespace for `D403` (#14963)
  Update pre-commit dependencies (#15008)
  Check diagnostic refresh support from client capability (#15014)
  Update Rust crate colored to v2.2.0 (#15010)
  Update dependency monaco-editor to v0.52.2 (#15006)
  Update Rust crate thiserror to v2.0.7 (#15005)
  Update Rust crate serde to v1.0.216 (#15004)
  Update Rust crate libc to v0.2.168 (#15003)
  Update Rust crate fern to v0.7.1 (#15002)
  Update Rust crate chrono to v0.4.39 (#15001)
  Update Rust crate bstr to v1.11.1 (#15000)
  Update NPM Development dependencies (#14999)
  Update dependency ruff to v0.8.3 (#15007)
  Pin mdformat plugins in pre-commit (#14992)
  Use stripping block (`|-`) for page descriptions (#14980)
  [`perflint`] Fix panic in `perf401` (#14971)
  Improve the documentation of E201/E202 (#14983)
  [ruff_python_ast] Add name and default functions to TypeParam. (#14964)
  [red-knot] Emit an error if a bare `Annotated` or `Literal` is used in a type expression (#14973)
  [red-knot] Fix bugs relating to assignability of dynamic `type[]` types (#14972)
  ...