DOC: update HISTORY.rst for this PR and the previous one

Author: Valentin-Laurent

HISTORY.rst

@@ -12,6 +12,8 @@ History
 * Fix issue 528 to correct broken ENS image in the documentation
 * Fix issue 548 to correct labels generated in tutorial
 * Fix issue 547 to fix wrong warning
+* Fix issue 480 (correct display of mathematical equations in generated notebooks)
+* Refactor MapieRegressor and EnsembleRegressor, deprecate EnsembleRegressor.fit
 
 0.9.1 (2024-09-13)
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