Update docs.

Author: johnbartholomew

js/libjsonnet.wasm

@@ -2854,7 +2854,11 @@ <h4 id="std-minArray">
         </em>
       </p>
       <p>
-        Return the min of all element in <code>arr</code>.
+        Return the minimum of all elements in <code>arr</code>. If <code>keyF</code> is provided, it is called on each element
+        of the array and should return a comparator value, and in this case <code>minArray</code> will return an element
+        with the minimum comparator value. If <code>onEmpty</code> is provided, and <code>arr</code> is empty, then
+        <code>minArray</code> will return the provided <code>onEmpty</code> value. If <code>onEmpty</code> is not provided,
+        then an empty <code>arr</code> will raise an error.
       </p>
 
     </div>
@@ -2881,7 +2885,11 @@ <h4 id="std-maxArray">
         </em>
       </p>
       <p>
-        Return the max of all element in <code>arr</code>.
+        Return the maximum of all elements in <code>arr</code>. If <code>keyF</code> is provided, it is called on each element
+        of the array and should return a comparator value, and in this case <code>maxArray</code> will return an element
+        with the maximum comparator value. If <code>onEmpty</code> is provided, and <code>arr</code> is empty, then
+        <code>maxArray</code> will return the provided <code>onEmpty</code> value. If <code>onEmpty</code> is not provided,
+        then an empty <code>arr</code> will raise an error.
       </p>
 
     </div>