fix(docs): reject sync publish flag values

scripts/docs-sync-publish.mjs

@@ -172,7 +172,7 @@ const GENERATED_LOCALES = [
 
 function readOptionValue(argv, index, optionName) {
   const value = argv[index + 1];
-  if (value === undefined || value === "" || value.startsWith("--")) {
+  if (value === undefined || value === "" || value.startsWith("-")) {
     throw new Error(`${optionName} requires a value`);
   }
   return value;

test/scripts/docs-sync-publish.test.ts

@@ -41,6 +41,7 @@ describe("docs-sync-publish", () => {
       expect(() => parseArgs([flag, "--target", "generated-docs"])).toThrow(
         `${flag} requires a value`,
       );
+      expect(() => parseArgs([flag, "-h"])).toThrow(`${flag} requires a value`);
     }
   });
 });