Clarify that headers can be used to send beacons without data (#1014)

SHA: 6ab755c
Reason: push, by JensenPaul

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

index.html

@@ -6,7 +6,7 @@
   <link href="https://www.w3.org/StyleSheets/TR/2021/cg-draft" rel="stylesheet">
   <meta content="Bikeshed version d765c696b, updated Fri Mar 8 15:58:52 2024 -0800" name="generator">
   <link href="https://wicg.github.io/turtledove/" rel="canonical">
-  <meta content="da5b2ef0aa0d3b4ff64303cd721bca6f5664eed1" name="revision">
+  <meta content="6ab755c14cff04563f1cf070a3efcccce07266f0" name="revision">
   <meta content="dark light" name="color-scheme">
   <link href="https://www.w3.org/StyleSheets/TR/2021/dark.css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css">
 <style>
@@ -764,7 +764,7 @@
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2021/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">Protected Audience (formerly FLEDGE)</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2024-04-08">8 April 2024</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2024-04-09">9 April 2024</time></p>
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version: