Update getting-started.md (#3476)

Signed-off-by: Bob Du <i@bobdu.cc>

docs/introduction/getting-started.md

@@ -13,7 +13,7 @@ The default install options will automatically install and manage the CRDs as pa
 
 You can install those CRDs outside of `helm` using:
 ```bash
-kubectl apply -k "https://github.com/external-secrets/external-secrets//config/crds/bases?ref=<replace_with_your_version>"
+kubectl apply -k "https://raw.githubusercontent.com/external-secrets/external-secrets/<replace_with_your_version>/deploy/crds/bundle.yaml"
 ```
 
 Uncomment the relevant line in the next steps to disable the automatic install of CRDs.