Update examples README (helidon-io#3125)

examples/README.md

@@ -6,7 +6,7 @@
 
 Welcome to the Helidon Examples! If this is your first experience with
 Helidon we recommend you start with our
-[quickstart](https://helidon.io/docs/latest/#/getting-started/02_base-example).
+[quickstart](https://helidon.io/docs/v2/#/about/03_prerequisites)
 That will quickly get you going with your first Helidon application.
 
 After that you can come back here and dig into the examples. To access
@@ -15,11 +15,11 @@ these examples we recommend checking out from a released tag. For example:
 ```
 git clone [email protected]:oracle/helidon.git
 cd helidon
-git checkout tags/1.0.0
+git checkout tags/2.0.0
 ```
 
 Our examples are Maven projects and can be built and run with
-Java 8 or Java 11 -- so make sure you have those:
+Java 11 or newer -- so make sure you have those:
 
 ```
 java -version
@@ -35,10 +35,11 @@ just `cd` to the directory and run `mvn package`:
 cd examples/microprofile/hello-world-explicit
 mvn package
 ```
-Usually you can then run the example using:
+
+Usually the example will produce an application jar file that you can run:
 
 ```
-mvn exec:java
+java -jar target/example-name.jar
 ```
 
 But always see the example's `README` for details.