This commit corrects internal links within the core documentation files. The links were updated to point to the correct markdown files.
Key changes:
* Updated links in `docs/core/processQueue.md`, `docs/core/addTask.md`, `docs/core/test.md`, `docs/core/scheduler.md`, `docs/core/handler.md`, `docs/core/printAddonName.md`, and `docs/core/init.md`.
This commit updates the documentation to reflect the current function names and link structure. Specifically, it addresses the following:
* Corrected internal links within the documentation to point to the correct markdown files (e.g., `hashDelete.md` instead of `hashDelete`).
* Updated related function references to reflect the current function names and include missing functions.
* Removed outdated function references.
* Added `ramdb_db_fnc_scheduler` to related functions where appropriate.
* Updated the links section to use the correct markdown file names.
