Fixes typo in ML getting started. (#2740)

(cherry picked from commit b953322)

docs/en/stack/ml/get-started/ml-getting-started.asciidoc

@@ -47,7 +47,7 @@ user that has authority to manage {anomaly-jobs}. See <<setup>>.
 
 . {kibana-ref}/get-started.html#gs-get-data-into-kibana[Add the sample data sets that ship with {kib}]. 
 
-.. From the {kib} home page, click *Try samle data*, then open the 
+.. From the {kib} home page, click *Try sample data*, then open the 
 *Other sample data sets* section.
 
 .. Pick a data set. In this tutorial, you'll use the *Sample web logs*. While