[clang] [clang-format][NFC] Drop "Always" in "AlwaysBreakAfterReturnType". (PR #81591)

[Owen Pan via cfe-commits]

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@@ -1130,14 +1129,13 @@ template <> struct MappingTraits<FormatStyle> {
     // AlwaysBreakAfterReturnType was not, initialize the latter from the
     // former for backwards compatibility.
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owenca wrote:

```suggestion
    // BreakAfterReturnType was not, initialize the latter from the former for
    // backwards compatibility.
```

https://github.com/llvm/llvm-project/pull/81591