docs: update clippy section in DEVELOPMENT.md

- update command to include `--workspace`, matching `pre-commit`
- remove outdated paragraph about `msrv`

Author: xtqqczze

DEVELOPMENT.md

@@ -70,13 +70,9 @@ the suggested changes, and run `git commit ...` again.
 ### clippy
 
 ```shell
-cargo clippy --all-targets --all-features
+cargo clippy --workspace --all-targets --all-features
 ```
 
-The `msrv` key in the clippy configuration file `clippy.toml` is used to disable
-lints pertaining to newer features by specifying the minimum supported Rust
-version (MSRV).
-
 ### rustfmt
 
 ```shell