fix(elastic): fixed typo

public/app/plugins/datasource/elasticsearch/partials/config.html

@@ -1,7 +1,7 @@
 <div ng-include="httpConfigPartialSrc"></div>
 <br>
 
-<h5>Elastic search details</h5>
+<h5>Elasticsearch details</h5>
 
 <div class="tight-form">
 	<ul class="tight-form-list">