Added a clarifying note about argument order in the bin/elasticsearch start script

core/src/main/resources/org/elasticsearch/bootstrap/elasticsearch-start.help

@@ -1,6 +1,6 @@
 NAME
 
-    start - start Elasticsearcion
+    start - Start Elasticsearch
 
 SYNOPSIS
 
@@ -24,3 +24,5 @@ OPTIONS
     --property=value             Configures an elasticsearch specific property, like --network.host 127.0.0.1
     --property value
 
+    NOTE: The -d, -p, and -D arguments must appear before any --property arguments.
+