[NFC] disabling clang-tidy check readability-identifier-naming in Protocol.h

The file follows the LSP syntax, so we're intentially deviating
from the LLVM coding standard.

Differential Revision: https://reviews.llvm.org/D113889

clang-tools-extra/clangd/Protocol.h

@@ -36,6 +36,11 @@
 #include <string>
 #include <vector>
 
+// This file is using the LSP syntax for identifier names which is different
+// from the LLVM coding standard. To avoid the clang-tidy warnings, we're
+// disabling one check here.
+// NOLINTBEGIN(readability-identifier-naming)
+
 namespace clang {
 namespace clangd {
 
@@ -1794,4 +1799,6 @@ template <> struct format_provider<clang::clangd::Position> {
 };
 } // namespace llvm
 
+// NOLINTEND(readability-identifier-naming)
+
 #endif