Updating deprecated command example in search.md
stars example is deprecated. Changing to --filter=stars=5
@@ -83,7 +83,7 @@ This example displays images with a name containing 'busybox',
at least 3 stars and the description isn't truncated in the output:
```bash
-$ docker search --stars=3 --no-trunc busybox
+$ docker search --filter=stars=3 --no-trunc busybox
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
busybox Busybox base image. 325 [OK]
progrium/busybox 50 [OK]
