fix: Small typo in tests

Author: HazAT

packages/apm/test/hub.test.ts

@@ -14,7 +14,7 @@ describe('Hub', () => {
 
   describe('spans', () => {
     describe('sampling', () => {
-      test('set tracesSampleRate 0 root span', () => {
+      test('set tracesSampleRate 0 on span', () => {
         const hub = new Hub(new BrowserClient({ tracesSampleRate: 0 }));
         const span = hub.startSpan({}) as any;
         expect(span.sampled).toBeUndefined();