add stub pages gathering banners

topics/basics/plugin_structure.md

@@ -15,3 +15,9 @@ Click the following topics to learn more about the plugin system structure and p
 * [](plugin_configuration_file.md)
 * [](plugin_icon_file.md)
 * [](plugin_dependencies.md)
+
+> If a topic you are interested in is not covered in the above sections, let us know via the "**Was this page helpful?**" feedback form below or [other channels](getting_help.md#problems-with-the-guide).
+>
+> Please be specific about the topics and reasons for adding them, and leave your email in case we need more details.
+>
+{type="note"}

topics/basics/testing_plugins/testing_plugins.md

@@ -44,3 +44,9 @@ Please do not use <path>platform/testGuiFramework</path> it is reserved for inte
 * [](writing_tests.md)
 * [](testing_highlighting.md)
 * [](testing_faq.md)
+
+> If a topic you are interested in is not covered in the above sections, let us know via the "**Was this page helpful?**" feedback form below or [other channels](getting_help.md#problems-with-the-guide).
+>
+> Please be specific about the topics and reasons for adding them, and leave your email in case we need more details.
+>
+{type="note"}

topics/reference_guide/custom_language_support.md

@@ -54,3 +54,9 @@ The webinar [How We Built Comma, the Raku IDE, on the IntelliJ Platform](https:/
 * [](go_to_class_and_go_to_symbol.md)
 * [](documentation.md)
 * [](additional_minor_features.md)
+
+> If a topic you are interested in is not covered in the above sections, let us know via the "**Was this page helpful?**" feedback form below or [other channels](getting_help.md#problems-with-the-guide).
+>
+> Please be specific about the topics and reasons for adding them, and leave your email in case we need more details.
+>
+{type="note"}