Bring the spec of Range in sync with the implementation

S32-setting-library/Containers.pod

@@ -1036,11 +1036,11 @@ KeyBag, Pair, and PairMap.
 =head2 Range
 
     class Range does Positional does Iterable {
-        method from() {...}
-        method to() {...}
         method min() {...}
         method max() {...}
-        method List minmax() {...}
+        method List bounds() {...}
+        method excludes_min {...}
+        method excludes_max {...}
     }
 
 =head2 Buf