Fix link to Bazel documentation

Originally part of bazelbuild/stardoc#290

Original author: Philipp Stephani <[email protected]>

PiperOrigin-RevId: 742714974
Change-Id: I54a52cc3cbcd255b4534f540f6c67eba9e0452cd

Author: tetromino

src/main/protobuf/stardoc_output.proto

@@ -52,7 +52,7 @@ message ModuleInfo {
 
 // Representation of a Starlark rule attribute type. These generally
 // have a one-to-one correspondence with functions defined at
-// https://bazel.build/rules/lib/attr.
+// https://bazel.build/rules/lib/toplevel/attr.
 enum AttributeType {
   UNKNOWN = 0;
   // A special case of STRING; all rules have exactly one implicit
@@ -135,7 +135,7 @@ message MacroInfo {
 // Representation of a Starlark rule, repository rule, or module extension tag
 // attribute definition, comprised of an attribute name, and a schema defined by
 // a call to one of the 'attr' module methods enumerated at
-// https://bazel.build/rules/lib/attr
+// https://bazel.build/rules/lib/toplevel/attr.
 message AttributeInfo {
   // The name of the attribute.
   string name = 1;