[clang-tools-extra] [clang-tidy] Improve redundant-casting check for binary operation (PR #191386)

[Zeyi Xu via cfe-commits]

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@@ -27,11 +27,24 @@ Options
 
 .. option:: IgnoreMacros
 
-   If set to `true`, the check will not give warnings inside macros. Default
-   is `true`.
+  If set to `true`, the check will not give warnings inside macros. Default
+  is `true`.
 
 .. option:: IgnoreTypeAliases
 
-   When set to `false`, the check will consider type aliases, and when set to
-   `true`, it will resolve all type aliases and operate on the underlying
-   types. Default is `false`.
+  When set to `false`, the check will consider type aliases, and when set to
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zeyi2 wrote:

I'm a bit unsure whether to change the formatting style of these options, Currently we already mix 2 whitespaces and 3 whitespaces indention in the documentation.

Though tbh it's just a minor stylistic preference. I’m okay with keeping it as-is.

https://github.com/llvm/llvm-project/pull/191386