[clang-tools-extra] [mlir] [NFC][MLIR] Fix some typos (PR #108355)

[via cfe-commits]

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@@ -14,7 +14,7 @@
           "name": "punctuation.definition.string.begin.cpp"
         },
         "1": {
-          "name": "mlir.delimeter.raw.string.cpp"
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VitalyAnkh wrote:

But it is indeed a typo. Should we correct it?

https://github.com/llvm/llvm-project/pull/108355