Update CHANGELOG.md

Author: bbfrederick

CHANGELOG.md

@@ -4,6 +4,7 @@
 * (package) Modernized packaging and installation to match rapidtide (moved pretty much everything to pyproject.toml).
 * (package) Fixed all the copyright notices.
 * (package) Added codespell.
+* (docs) Fixed readthedocs build (it's been broken for quite some time).
 * (Docker) Turned on provenance and sbom in Docker builds.
 * (Docker) Rebuilt on the newest basecontainer with several security fixes.
 * Merged many, many dependabot PR's