[DOCS] Update screenshots for population job (elastic/x-pack-elasticsearch#3334)

* [DOCS] Update screenshots for population job

* [DOCS] Updated screenshots for population wizard

Original commit: elastic/x-pack-elasticsearch@21b7dc1734

docs/en/ml/populations.asciidoc

@@ -58,15 +58,16 @@ PUT _xpack/ml/anomaly_detectors/population
 //include only workstations as servers and printers would behave differently
 //from the population
 
-If your data is stored in {es}, you can create an advanced job with these same
-properties. In particular, you specify the `over_field_name` property when you
-add detectors:
+If your data is stored in {es}, you can use the population job wizard in {kib}
+to create a job with these same properties. For example, the population job
+wizard provides the following job settings:
 
 [role="screenshot"]
-image::images/ml-population-job.jpg["Create a detector for population analysis]
+image::images/ml-population-job.jpg["Job settings in the population job wizard]
 
 After you open the job and start the {dfeed} or supply data to the job, you can
-view the results in {kib}. For example:
+view the results in {kib}. For example, you can view the results in the
+**Anomaly Explorer**:
 
 [role="screenshot"]
 image::images/ml-population-results.jpg["Population analysis results in the Anomaly Explorer"]