docs(sample): clean up README for native image sample (#771)

Author: mpeddada1

samples/native-image-sample/README.md

@@ -20,25 +20,25 @@ You will need to follow these prerequisite steps in order to run the samples:
 
  **Note:** Authenticating with Application Default Credentials is convenient to use during development, but we recommend [alternate methods of authentication](https://cloud.google.com/docs/authentication/production) during production use.
 
-3. Install the GraalVM compiler.
+3. Install the native image compiler.
 
- You can follow the [official installation instructions](https://www.graalvm.org/docs/getting-started/#install-graalvm) from the GraalVM website.
+ You can follow the [installation instructions](https://www.graalvm.org/docs/getting-started/#install-graalvm).
  After following the instructions, ensure that you install the native image extension installed by running:
 
  ```
  gu install native-image
  ```
 
- Once you finish following the instructions, verify that the default version of Java is set to the GraalVM version by running `java -version` in a terminal.
+ Once you finish following the instructions, verify that the default version of Java is set to the correct version by running `java -version` in a terminal.
 
  You will see something similar to the below output:
 
  ```
  $ java -version
  
- openjdk version "11.0.7" 2020-04-14
- OpenJDK Runtime Environment GraalVM CE 20.1.0 (build 11.0.7+10-jvmci-20.1-b02)
- OpenJDK 64-Bit Server VM GraalVM CE 20.1.0 (build 11.0.7+10-jvmci-20.1-b02, mixed mode, sharing)
+ openjdk version "17.0.3" 2022-04-19
+ OpenJDK Runtime Environment GraalVM CE 22.1.0 (build 17.0.3+7-jvmci-22.1-b06)
+ OpenJDK 64-Bit Server VM GraalVM CE 22.1.0 (build 17.0.3+7-jvmci-22.1-b06, mixed mode, sharing)
  ```
 ## Sample
 1. **(Optional)** If you wish to run the application against the [Datastore emulator](https://cloud.google.com/sdk/gcloud/reference/beta/emulators/datastore), ensure that you have the [Google Cloud SDK](https://cloud.google.com/sdk) installed.