windows separator for tsv (#26377)

Author: ckairen

eng/tools/TypeSpecValidation/src/index.ts

@@ -5,6 +5,7 @@ import { FormatRule } from "./rules/format.js";
 import { GitDiffRule } from "./rules/git-diff.js";
 import { LinterRulesetRule } from "./rules/linter-ruleset.js";
 import { NpmPrefixRule } from "./rules/npm-prefix.js";
+import path from "path";
 import { TsvRunnerHost } from "./tsv-runner-host.js";
 
 export async function main() {
@@ -16,7 +17,7 @@ export async function main() {
     },
   };
   const parsedArgs = parseArgs({ args, options, allowPositionals: true } as ParseArgsConfig);
-  const folder = parsedArgs.positionals[0];
+  const folder = parsedArgs.positionals[0].split(path.sep).join("/");
   console.log("Running TypeSpecValidation on folder:", folder);
 
   const host = new TsvRunnerHost();