Extraction of terms from advisory to be improved

[copernico]

Example

CVE-2020-1936: A cross-site scripting issue was found in Apache Ambari Views. This was addressed in Apache Ambari 2.7.4.

Problem

A commit with the following commit message will not be detected as matching the "cross-site scripting" part of the advisory text: "AMBARI-25329. Ambari breadcrumbs xss vulnerability".

[sacca97]

Related to #337