Fixed docs for put_script

Closes #132

Author: clintongormley

lib/Search/Elasticsearch/Client/5_0/Direct.pm

@@ -1638,7 +1638,10 @@ The C<put_script()> method is used to store a script in the cluster state. For i
         lang => 'painless',
         id   => 'hello_world',
         body => {
-          script => q(return "hello world");
+          script => {
+            lang   => 'painless',
+            source => q(return "hello world")
+          }
         }
     );
 

lib/Search/Elasticsearch/Client/6_0/Direct.pm

@@ -1463,8 +1463,10 @@ The C<put_script()> method is used to store a script in the cluster state. For i
     $result  = $e->put_scripts(
         id   => 'hello_world',
         body => {
-          lang   => 'painless',
-          source => q(return "hello world");
+          script => {
+            lang   => 'painless',
+            source => q(return "hello world")
+          }
         }
     );