fix missing command

maxim-uvarov · maxim-uvarov · commit db502e41007d · 2024-05-28T14:18:55.000Z
diff --git a/book/dataframes.md b/book/dataframes.md
@@ -1086,7 +1086,7 @@ let group = $lf_2
       (polars col value | polars mean | polars as mean)
     ]
 
-$lf_2 | polars join $group name name
+$lf_2 | polars join $group name name | polars collect
 ```
 ```output-numd
 ╭───┬──────┬───────┬─────┬──────╮

Original file line number	Diff line number	Diff line change
`@@ -1086,7 +1086,7 @@ let group = $lf_2`
`1086`	`1086`	`(polars col value \| polars mean \| polars as mean)`
`1087`	`1087`	`]`
`1088`	`1088`
`1089`		`-$lf_2 \| polars join $group name name`
	`1089`	`+$lf_2 \| polars join $group name name \| polars collect`
`1090`	`1090`	```
`1091`	`1091`	```output-numd
`1092`	`1092`	`╭───┬──────┬───────┬─────┬──────╮`