docs: Fix the type of parameter (probabl-ai#1097)

Fixing the type of `pos_label` in the different docstrings.
Here, it is the most consistent types that are accepted.

Author: glemaitre

skore/src/skore/sklearn/_estimator/metrics_accessor.py

@@ -83,7 +83,7 @@ def report_metrics(
             same parameter name with different values), you can use scikit-learn scorers
             as provided by :func:`sklearn.metrics.make_scorer`.
 
-        pos_label : int, default=None
+        pos_label : int, float, bool or str, default=None
             The positive class.
 
         scoring_kwargs : dict, default=None
@@ -357,7 +357,7 @@ def precision(
                 only the statistics of the positive class (i.e. equivalent to
                 `average="binary"`).
 
-        pos_label : int, default=None
+        pos_label : int, float, bool or str, default=None
             The positive class.
 
         Returns
@@ -434,7 +434,7 @@ def recall(
                 only the statistics of the positive class (i.e. equivalent to
                 `average="binary"`).
 
-        pos_label : int, default=None
+        pos_label : int, float, bool or str, default=None
             The positive class.
 
         Returns
@@ -938,7 +938,7 @@ def roc(self, *, data_source="test", X=None, y=None, pos_label=None, ax=None):
             New target on which to compute the metric. By default, we use the target
             provided when creating the reporter.
 
-        pos_label : str, default=None
+        pos_label : int, float, bool or str, default=None
             The positive class.
 
         ax : matplotlib.axes.Axes, default=None
@@ -995,7 +995,7 @@ def precision_recall(
             New target on which to compute the metric. By default, we use the target
             provided when creating the reporter.
 
-        pos_label : str, default=None
+        pos_label : int, float, bool or str, default=None
             The positive class.
 
         ax : matplotlib.axes.Axes, default=None

skore/src/skore/sklearn/_estimator/report.py

@@ -288,7 +288,7 @@ def _get_cached_response_values(
         response_method : str
             The response method.
 
-        pos_label : str, default=None
+        pos_label : int, float, bool or str, default=None
             The positive label.
 
         data_source : {"test", "train", "X_y"}, default="test"

skore/src/skore/sklearn/_plot/roc_curve.py

@@ -56,7 +56,7 @@ class RocCurveDisplay(HelpDisplayMixin, _ClassifierCurveDisplayMixin):
     estimator_name : str
         Name of the estimator.
 
-    pos_label : str, default=None
+    pos_label : int, float, bool or str, default=None
         The class considered as positive. Only meaningful for binary classification.
 
     data_source : {"train", "test", "X_y"}, default=None