Update go-print-text.md

Author: v-jaswel

articles/cognitive-services/Computer-vision/QuickStarts/go-print-text.md

@@ -46,28 +46,23 @@ import (
     "fmt"
     "io/ioutil"
     "net/http"
+    "os"
     "strings"
     "time"
 )
 
 func main() {
+    // Add your Computer Vision subscription key and endpoint to your environment variables.
     // Add your Computer Vision subscription key and endpoint to your environment variables.
     subscriptionKey := os.Getenv("COMPUTER_VISION_SUBSCRIPTION_KEY")
-    if (subscriptionKey == "") {
-        log.Fatal("\n\nSet the COMPUTER_VISION_SUBSCRIPTION_KEY environment variable.\n" +
-            "**Restart your shell or IDE for changes to take effect.**\n")
-
     endpoint := os.Getenv("COMPUTER_VISION_ENDPOINT")
-    if ("" == endpoint) {
-        log.Fatal("\n\nSet the COMPUTER_VISION_ENDPOINT environment variable.\n" +
-            "**Restart your shell or IDE for changes to take effect.**")
-    }
-    const uriBase = endpoint + "vision/v2.1/ocr"
+
+    uriBase := endpoint + "vision/v3.0/ocr"
     const imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/a/af/" +
         "Atomist_quote_from_Democritus.png/338px-Atomist_quote_from_Democritus.png"
 
-    const params = "?language=unk&detectOrientation=true"
-    const uri = uriBase + params
+    params := "?language=unk&detectOrientation=true"
+    uri := uriBase + params
     const imageUrlEnc = "{\"url\":\"" + imageUrl + "\"}"
 
     reader := strings.NewReader(imageUrlEnc)