guide

whatsmars-elasticsearch/README.md

 ### Elasticsearch
 
 1. Download and unzip Elasticsearch https://www.elastic.co/downloads/past-releases/elasticsearch-5-6-13
-1. Run bin/elasticsearch (or bin\elasticsearch.bat on Windows)
-1. Run curl http://localhost:9200/ or Invoke-RestMethod http://localhost:9200 with PowerShell
+1. Run `bin/elasticsearch` (or `bin\elasticsearch.bat` on Windows)
+1. Run `curl http://localhost:9200/` or `Invoke-RestMethod http://localhost:9200` with PowerShell
 1. Dive into the [getting started guide](https://www.elastic.co/guide/en/elasticsearch/reference/current/getting-started.html).
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