Fixes last java test

src/test/java/org/openapijsonschematools/codegen/generatorrunner/DefaultGeneratorRunnerTest.java

@@ -546,7 +546,7 @@ public void testCustomNonLibraryTemplates() throws IOException {
  File output = target.toFile();
  try {
  // Create custom template
- File customTemplate = new File(templates.toFile(), "README.mustache");
+ File customTemplate = new File(templates.toFile(), "README.hbs");
  new File(customTemplate.getParent()).mkdirs();
  Files.write(customTemplate.toPath(),
  "# {{someKey}}".getBytes(StandardCharsets.UTF_8),
@@ -573,7 +573,7 @@ public void testCustomNonLibraryTemplates() throws IOException {
 
  List<File> files = generator.opts(clientOptInput).generate();
 
- Assert.assertEquals(files.size(), 27);
+ Assert.assertEquals(files.size(), 57);
 
  // GeneratorRunner should report README.md as a generated file
  TestUtils.ensureContainsFile(files, output, "README.md");