doc: extensions: ncs_include: return extension parameters

They were missing.

Signed-off-by: Gerard Marull-Paretas <[email protected]>

Author: gmarull

doc/_extensions/ncs_include/ncs_include.py

@@ -173,3 +173,9 @@ def is_blank(line):
 def setup(app):
     app.add_config_value('ncs_include_mapping', {}, True)
     directives.register_directive('ncs-include', NcsInclude)
+
+    return {
+        "version": "0.1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }