[clang-format]: Fix JSON casing (#168156)

This commit aligns the user clang-format output to always show JSON, not Json.

NOKEYCHECK=True
GitOrigin-RevId: e8cc0c3eb82789c9d2a22e094a941be180e9ab4b
diff --git a/ClangFormat.cpp b/ClangFormat.cpp
index 5f6502f..12ac8a3 100644
--- a/ClangFormat.cpp
+++ b/ClangFormat.cpp
@@ -88,7 +88,7 @@
              "  CSharp: .cs\n"
              "  Java: .java\n"
              "  JavaScript: .js .mjs .cjs .ts\n"
-             "  Json: .json .ipynb\n"
+             "  JSON: .json .ipynb\n"
              "  Objective-C: .m .mm\n"
              "  Proto: .proto .protodevel\n"
              "  TableGen: .td\n"
@@ -489,7 +489,7 @@
     auto Err =
         Replaces.add(tooling::Replacement(AssumedFileName, 0, 0, "x = "));
     if (Err)
-      llvm::errs() << "Bad Json variable insertion\n";
+      llvm::errs() << "Bad JSON variable insertion\n";
   }
 
   auto ChangedCode = tooling::applyAllReplacements(Code->getBuffer(), Replaces);
diff --git a/git-clang-format b/git-clang-format
index fe2dd28..dcc0a53 100755
--- a/git-clang-format
+++ b/git-clang-format
@@ -115,7 +115,7 @@
             "ts",  # TypeScript
             "cs",  # C Sharp
             "json",
-            "ipynb",  # Json
+            "ipynb",  # JSON
             "sv",
             "svh",
             "v",