chore: fix transifex push script

scripts/transifex.mjs

@@ -82,7 +82,7 @@ async function doRequest(path, options) {
   };
   const qs = options.query ? `?${new URLSearchParams(options.query)}` : '';
   if (options.body) {
-    init.headers['content-type'] = 'application/vnd.api+json';
+    init.headers['content-type'] ||= 'application/vnd.api+json';
     init.body = JSON.stringify(options.body);
   }
   if (!path.includes('://')) path = `https://rest.api.transifex.com${path}`;
@@ -291,7 +291,7 @@ async function batchHandle(handle, allowedLangs) {
       finished += 1;
       showProgress();
     } catch (err) {
-      process.stderr.write(`\nError pulling ${lang}\n`);
+      process.stderr.write(`\nError handling ${lang}\n`);
       throw err;
     }
   }));