chore(doc): Update README.md (#15438)

README.md

@@ -59,16 +59,16 @@ RisingWave is a Postgres-compatible streaming database engineered to provide the
 
 ![RisingWave](https://github.com/risingwavelabs/risingwave-docs/blob/main/docs/images/new_archi_grey.png)
 
-## Try it out in 5 minutes
-Docker pull:
-```
-docker run -it --pull=always -p 4566:4566 -p 5691:5691 risingwavelabs/risingwave:latest playground
-```
-Now connect to RisingWave using `psql`:
-```
-psql -h localhost -p 4566 -d dev -U root
+## Try it out in 60 seconds
+
+Install RisingWave:
+```shell
+curl https://risingwave.com/sh | sh
 ```
-Don’t have Docker? Learn how to install RisingWave on Mac, Ubuntu, and other environments at [Quick Start](https://docs.risingwave.com/docs/current/get-started/).
+
+Then follow the prompts to start and connect to RisingWave.
+
+To learn about other installation options such as Docker, see [Quick Start](https://docs.risingwave.com/docs/current/get-started/).
 
 ## Production deployments