FIX: Link

Author: larsoner

docs/maintainer/knowledge_base.md

@@ -1466,6 +1466,8 @@ Currently available packages:
 - exceptiongroup
 - importlib-metadata
 
+<a id="abi3">
+
 ### Packages with abi3 extensions
 
 Packages can be built using CPython's stable [`abi3` mode](https://docs.python.org/3/c-api/stable.html) by adding a few conditionals to the `build`, `requirements`, and (optionally) `test` sections. See [this `meta.yaml` example](https://github.com/conda-forge/python-abi3-feedstock/blob/main/recipe/example-meta.yaml) from the `python-abi3-feedstock`, in particular the parts that depend on the `is_abi3`, as well as the relevant [conda-build documentation](https://docs.conda.io/projects/conda-build/en/stable/resources/define-metadata.html#python-version-independent-packages).