Update README.md

README.md

@@ -19,7 +19,7 @@ Examples
 Create product
 --------------
 
-curl -X POST \
+`curl -X POST \
   http://localhost:1026/v2/entities \
   -H 'Content-Type: application/json' \
   -H 'fiware-service: sensores' \
@@ -39,7 +39,7 @@ curl -X POST \
         "type": "Integer",
         "value": 1
     }
-}'
+}'`
 
 Verify product
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