Start to document default_applicable_licenses/default_package_metadata.

This just puts the placeholder out there. In the future, there should be links to much larger documentation than belongs inside[]

RELNOTES: None
PiperOrigin-RevId: 515818801
Change-Id: Ibb1aa10b0a1f91624d9f9d104d6a2b68339ff994
diff --git a/src/main/java/com/google/devtools/build/docgen/templates/be/functions.vm b/src/main/java/com/google/devtools/build/docgen/templates/be/functions.vm
index 2929219..6ae1b18 100644
--- a/src/main/java/com/google/devtools/build/docgen/templates/be/functions.vm
+++ b/src/main/java/com/google/devtools/build/docgen/templates/be/functions.vm
@@ -34,7 +34,7 @@
 <h2 id="package">package</h2>
 
 <pre>
-package(default_deprecation, default_testonly, default_visibility, features)
+package(default_deprecation, default_package_metadata, default_testonly, default_visibility, features)
 </pre>
 <p>This function declares metadata that applies to every subsequent rule in the
 package. It is used at most once within a package (BUILD file).</p>
@@ -57,6 +57,10 @@
   </thead>
   <tbody>
     <tr>
+      <td id="package.default_applicable_licenses"><code>default_applicable_licenses</code></td>
+      <td>
+        <p>Alias for <a href="#package.default_package_metadata"><code>default_package_metadata</code></a>.
+    <tr>
       <td id="package.default_visibility"><code>default_visibility</code></td>
       <td>
         <p><code>List of <a href="$expander.expandRef("build-ref#labels")">labels</a>; optional</code></p>
@@ -79,6 +83,17 @@
       </td>
     </tr>
     <tr>
+      <td id="package.default_package_metadata"><code>default_package_metadata</code></td>
+      <td>
+        <p><code>List of <a href="$expander.expandRef("build-ref#labels")">labels</a>; optional</code></p>
+        <p>Sets a default list of metadata targets which apply to all other targets in the package.
+	These are typically targets related to OSS package and license declarations.
+	See <a href="https://github.com/bazelbuild/rules_license>rules_license</a> for examples.</p>
+
+      </td>
+    </tr>
+
+    <tr>
       <td id="package.default_testonly"><code>default_testonly</code></td>
       <td>
         <p><code>Boolean; optional; default is False except as noted</code></p>