Auto merge of rust-lang#14134 - lnicola:clippy-manual, r=Veykril

feat: Add clippy configuration section to the manual and update some old keys

Closes rust-lang#14132

I don't think this is supposed to be under `Diagnostics`, but it does make sense in a way 🤷 (it's probably where someone might look).

Author: bors

docs/user/manual.adoc

@@ -773,14 +773,18 @@ See https://github.com/rust-analyzer/rust-project.json-example for a small examp
 
 You can set the `RA_LOG` environment variable to `rust_analyzer=info` to inspect how rust-analyzer handles config and project loading.
 
-Note that calls to `cargo check` are disabled when using `rust-project.json` by default, so compilation errors and warnings will no longer be sent to your LSP client. To enable these compilation errors you will need to specify explicitly what command rust-analyzer should run to perform the checks using the `checkOnSave.overrideCommand` configuration. As an example, the following configuration explicitly sets `cargo check` as the `checkOnSave` command.
+Note that calls to `cargo check` are disabled when using `rust-project.json` by default, so compilation errors and warnings will no longer be sent to your LSP client.
+To enable these compilation errors you will need to specify explicitly what command rust-analyzer should run to perform the checks using the `rust-analyzer.check.overrideCommand` configuration.
+As an example, the following configuration explicitly sets `cargo check` as the `check` command.
 
 [source,json]
 ----
-{ "rust-analyzer.checkOnSave.overrideCommand": ["cargo", "check", "--message-format=json"] }
+{ "rust-analyzer.check.overrideCommand": ["cargo", "check", "--message-format=json"] }
 ----
 
-The `checkOnSave.overrideCommand` requires the command specified to output json error messages for rust-analyzer to consume. The `--message-format=json` flag does this for `cargo check` so whichever command you use must also output errors in this format. See the <<Configuration>> section for more information.
+`check.overrideCommand` requires the command specified to output json error messages for rust-analyzer to consume.
+The `--message-format=json` flag does this for `cargo check` so whichever command you use must also output errors in this format.
+See the <<Configuration>> section for more information.
 
 == Security
 
@@ -821,6 +825,10 @@ include::./generated_assists.adoc[]
 While most errors and warnings provided by rust-analyzer come from the `cargo check` integration, there's a growing number of diagnostics implemented using rust-analyzer's own analysis.
 Some of these diagnostics don't respect `\#[allow]` or `\#[deny]` attributes yet, but can be turned off using the `rust-analyzer.diagnostics.enable`, `rust-analyzer.diagnostics.experimental.enable` or `rust-analyzer.diagnostics.disabled` settings.
 
+=== Clippy
+
+To run `cargo clippy` instead of `cargo check`, you can set `"rust-analyzer.check.command": "clippy"`.
+
 include::./generated_diagnostic.adoc[]
 
 == Editor Features
@@ -953,7 +961,7 @@ Also note that a full runnable name is something like *run bin_or_example_name*,
 
 Instead of relying on the built-in `cargo check`, you can configure Code to run a command in the background and use the `$rustc-watch` problem matcher to generate inline error markers from its output.
 
-To do this you need to create a new https://code.visualstudio.com/docs/editor/tasks[VS Code Task] and set `rust-analyzer.checkOnSave.enable: false` in preferences.
+To do this you need to create a new https://code.visualstudio.com/docs/editor/tasks[VS Code Task] and set `"rust-analyzer.checkOnSave": false` in preferences.
 
 For example, if you want to run https://crates.io/crates/cargo-watch[`cargo watch`] instead, you might add the following to `.vscode/tasks.json`: