update docs

Author: jaffourt

doc/modules/array_api.rst

@@ -151,6 +151,7 @@ Metrics
 - :func:`sklearn.metrics.brier_score_loss`
 - :func:`sklearn.metrics.cohen_kappa_score`
 - :func:`sklearn.metrics.confusion_matrix`
+- :func:`sklearn.metrics.coverage_error`
 - :func:`sklearn.metrics.d2_brier_score`
 - :func:`sklearn.metrics.d2_log_loss_score`
 - :func:`sklearn.metrics.d2_tweedie_score`