DOC One version per line, for readability (scikit-learn#31132)

Author: DimitriPapadopoulos

doc/install.rst

@@ -202,12 +202,23 @@ purpose.
 .. warning::
 
     Scikit-learn 0.20 was the last version to support Python 2.7 and Python 3.4.
-    Scikit-learn 0.21 supported Python 3.5-3.7.
-    Scikit-learn 0.22 supported Python 3.5-3.8.
-    Scikit-learn 0.23-0.24 required Python 3.6 or newer.
-    Scikit-learn 1.0 supported Python 3.7-3.10.
-    Scikit-learn 1.1, 1.2 and 1.3 support Python 3.8-3.12
-    Scikit-learn 1.4 requires Python 3.9 or newer.
+
+    Scikit-learn 0.21 supported Python 3.5—3.7.
+
+    Scikit-learn 0.22 supported Python 3.5—3.8.
+
+    Scikit-learn 0.23 required Python 3.6—3.8.
+
+    Scikit-learn 0.24 required Python 3.6—3.9.
+
+    Scikit-learn 1.0 supported Python 3.7—3.10.
+
+    Scikit-learn 1.1, 1.2 and 1.3 supported Python 3.8—3.12.
+
+    Scikit-learn 1.4 and 1.5 supported Python 3.9—3.12.
+
+    Scikit-learn 1.6 supported Python 3.9—3.13.
+
     Scikit-learn 1.7 requires Python 3.10 or newer.
 
 .. _install_by_distribution: