One of the comments in the manual evaluation of the link recommendation in T278864#6974599 mentioned that some of the link recommendations appear in sections that typically don't have links, e.g. the "Sources" section, in which links were suggested inside of citations. We should avoid suggesting links in these sections. Examples can be found in https://docs.google.com/spreadsheets/d/1RH5mMC1oTwc_DxE-R6ToEv1cver4Aoh21Ur9XuYIG9c/edit#gid=0
At the moment, we identify elements of raw text from the wikitext of an article using mwparserfromhell. Some of the content in sections such as "Sources" is then likely parsed as raw text and, in turn, used as potential anchor-text for links.
In principle, we can identify specific sections from the wikitext ("== <section-title> ==") and exclude them from being considered by the link recommendation. The challenge will be to identify the relevant section-titles across different languages/wikis. For this, we could potentially use prior work from Research on section-alignment across languages.