[clang] [clang-format][docs] Clarify AllowShortFunctionsOnASingleLine deprecation (PR #195491)

[Björn Schäpers via cfe-commits]

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@@ -893,6 +889,7 @@ struct FormatStyle {
   ///     Inline: true
   ///     Other: false
   /// \endcode
+  ///
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HazardyKnusperkeks wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/195491