Updated comments

Author: wiazur

Search/BingCustomSearch/src/main/java/com/microsoft/azure/cognitiveservices/search/customsearch/samples/BingCustomSearchSample.java

@@ -72,20 +72,18 @@ public static void main(String[] args) {
 
             // If you do not have a customConfigId, you can also use 1 as your value when setting your environment variable.
 
-            // If you are going to set the AZURE_BING_SAMPLES_API_KEY and AZURE_BING_SAMPLES_CUSTOM_CONFIG_ID environment variables, make sure you set it for your OS, then reopen your command prompt or IDE.
+            // If you are going to set the BING_CUSTOM_SEARCH_SUBSCRIPTION_KEY and AZURE_BING_SAMPLES_CUSTOM_CONFIG_ID environment variables, make sure you set it for your OS, then reopen your command prompt or IDE.
             // If not, you may get an API key not found exception.
-            // IMPORTANT: if you have not set the `AZURE_BING_SAMPLES_API_KEY` and AZURE_BING_SAMPLES_CUSTOM_CONFIG_ID environment variables to your cognitive services API key:
+            // IMPORTANT: if you have not set the BING_CUSTOM_SEARCH_SUBSCRIPTION_KEY and AZURE_BING_SAMPLES_CUSTOM_CONFIG_ID environment variables to your cognitive services API key:
             // 1. comment out the below lines
             final String subscriptionKey = System.getenv("BING_CUSTOM_SEARCH_SUBSCRIPTION_KEY");
             final String customConfigId = System.getenv("AZURE_BING_SAMPLES_CUSTOM_CONFIG_ID");
             // 2. paste your cognitive services API key and custom config id below, and uncomment the following two lines
-            //final String subscriptionKey = "enter your key here";
+            //final String subscriptionKey = System.getenv("BING_CUSTOM_SEARCH_SUBSCRIPTION_KEY");
             //final String customConfigId = "enter your custom config id here";
 
-
             BingCustomSearchAPI client = BingCustomSearchManager.authenticate(subscriptionKey);
 
-
             runSample(client, customConfigId);
         } catch (Exception e) {
             System.out.println(e.getMessage());