Corrected PTH203–PTH205 rule descriptions (#9914)

## Summary
Closes #9898.

## Test Plan
```sh
python scripts/generate_mkdocs.py && mkdocs serve -f mkdocs.public.yml
```

crates/ruff_linter/src/rules/flake8_use_pathlib/rules/os_path_getatime.rs

@@ -10,7 +10,7 @@ use ruff_macros::{derive_message_formats, violation};
 ///
 /// When possible, using `Path` object methods such as `Path.stat()` can
 /// improve readability over the `os` module's counterparts (e.g.,
-/// `os.path.getsize()`).
+/// `os.path.getatime()`).
 ///
 /// Note that `os` functions may be preferable if performance is a concern,
 /// e.g., in hot loops.
@@ -19,19 +19,19 @@ use ruff_macros::{derive_message_formats, violation};
 /// ```python
 /// import os
 ///
-/// os.path.getsize(__file__)
+/// os.path.getatime(__file__)
 /// ```
 ///
 /// Use instead:
 /// ```python
 /// from pathlib import Path
 ///
-/// Path(__file__).stat().st_size
+/// Path(__file__).stat().st_atime
 /// ```
 ///
 /// ## References
 /// - [Python documentation: `Path.stat`](https://docs.python.org/3/library/pathlib.html#pathlib.Path.stat)
-/// - [Python documentation: `os.path.getsize`](https://docs.python.org/3/library/os.path.html#os.path.getsize)
+/// - [Python documentation: `os.path.getatime`](https://docs.python.org/3/library/os.path.html#os.path.getatime)
 /// - [PEP 428](https://peps.python.org/pep-0428/)
 /// - [Correspondence between `os` and `pathlib`](https://docs.python.org/3/library/pathlib.html#correspondence-to-tools-in-the-os-module)
 /// - [Why you should be using pathlib](https://treyhunner.com/2018/12/why-you-should-be-using-pathlib/)

crates/ruff_linter/src/rules/flake8_use_pathlib/rules/os_path_getctime.rs

@@ -2,15 +2,15 @@ use ruff_diagnostics::Violation;
 use ruff_macros::{derive_message_formats, violation};
 
 /// ## What it does
-/// Checks for uses of `os.path.getatime`.
+/// Checks for uses of `os.path.getctime`.
 ///
 /// ## Why is this bad?
 /// `pathlib` offers a high-level API for path manipulation, as compared to
 /// the lower-level API offered by `os`.
 ///
 /// When possible, using `Path` object methods such as `Path.stat()` can
 /// improve readability over the `os` module's counterparts (e.g.,
-/// `os.path.getsize()`).
+/// `os.path.getctime()`).
 ///
 /// Note that `os` functions may be preferable if performance is a concern,
 /// e.g., in hot loops.
@@ -19,19 +19,19 @@ use ruff_macros::{derive_message_formats, violation};
 /// ```python
 /// import os
 ///
-/// os.path.getsize(__file__)
+/// os.path.getctime(__file__)
 /// ```
 ///
 /// Use instead:
 /// ```python
 /// from pathlib import Path
 ///
-/// Path(__file__).stat().st_size
+/// Path(__file__).stat().st_ctime
 /// ```
 ///
 /// ## References
 /// - [Python documentation: `Path.stat`](https://docs.python.org/3/library/pathlib.html#pathlib.Path.stat)
-/// - [Python documentation: `os.path.getsize`](https://docs.python.org/3/library/os.path.html#os.path.getsize)
+/// - [Python documentation: `os.path.getctime`](https://docs.python.org/3/library/os.path.html#os.path.getctime)
 /// - [PEP 428](https://peps.python.org/pep-0428/)
 /// - [Correspondence between `os` and `pathlib`](https://docs.python.org/3/library/pathlib.html#correspondence-to-tools-in-the-os-module)
 /// - [Why you should be using pathlib](https://treyhunner.com/2018/12/why-you-should-be-using-pathlib/)

crates/ruff_linter/src/rules/flake8_use_pathlib/rules/os_path_getmtime.rs

@@ -2,15 +2,15 @@ use ruff_diagnostics::Violation;
 use ruff_macros::{derive_message_formats, violation};
 
 /// ## What it does
-/// Checks for uses of `os.path.getatime`.
+/// Checks for uses of `os.path.getmtime`.
 ///
 /// ## Why is this bad?
 /// `pathlib` offers a high-level API for path manipulation, as compared to
 /// the lower-level API offered by `os`.
 ///
 /// When possible, using `Path` object methods such as `Path.stat()` can
 /// improve readability over the `os` module's counterparts (e.g.,
-/// `os.path.getsize()`).
+/// `os.path.getmtime()`).
 ///
 /// Note that `os` functions may be preferable if performance is a concern,
 /// e.g., in hot loops.
@@ -19,19 +19,19 @@ use ruff_macros::{derive_message_formats, violation};
 /// ```python
 /// import os
 ///
-/// os.path.getsize(__file__)
+/// os.path.getmtime(__file__)
 /// ```
 ///
 /// Use instead:
 /// ```python
 /// from pathlib import Path
 ///
-/// Path(__file__).stat().st_size
+/// Path(__file__).stat().st_mtime
 /// ```
 ///
 /// ## References
 /// - [Python documentation: `Path.stat`](https://docs.python.org/3/library/pathlib.html#pathlib.Path.stat)
-/// - [Python documentation: `os.path.getsize`](https://docs.python.org/3/library/os.path.html#os.path.getsize)
+/// - [Python documentation: `os.path.getmtime`](https://docs.python.org/3/library/os.path.html#os.path.getmtime)
 /// - [PEP 428](https://peps.python.org/pep-0428/)
 /// - [Correspondence between `os` and `pathlib`](https://docs.python.org/3/library/pathlib.html#correspondence-to-tools-in-the-os-module)
 /// - [Why you should be using pathlib](https://treyhunner.com/2018/12/why-you-should-be-using-pathlib/)