Skydoc: do not show documentation of loaded symbols

Default behavior of Bazel will change soon (--incompatible_no_transitive_loads)

#5636

RELNOTES: None.
PiperOrigin-RevId: 222841756
diff --git a/src/main/java/com/google/devtools/build/skydoc/SkydocMain.java b/src/main/java/com/google/devtools/build/skydoc/SkydocMain.java
index b86d1d0..f298430 100644
--- a/src/main/java/com/google/devtools/build/skydoc/SkydocMain.java
+++ b/src/main/java/com/google/devtools/build/skydoc/SkydocMain.java
@@ -330,7 +330,7 @@
     ImmutableSet.Builder<RuleInfo> handledRuleDefinitions = ImmutableSet.builder();
 
     // Sort the bindings so their ordering is deterministic.
-    TreeMap<String, Object> sortedBindings = new TreeMap<>(env.getGlobals().getBindings());
+    TreeMap<String, Object> sortedBindings = new TreeMap<>(env.getGlobals().getExportedBindings());
 
     for (Entry<String, Object> envEntry : sortedBindings.entrySet()) {
       if (ruleFunctions.containsKey(envEntry.getValue())) {