docs(python): improve struct documentation (#11585)

docs/src/python/user-guide/expressions/structs.py

@@ -26,24 +26,24 @@
 # --8<-- [end:struct_unnest]
 
 # --8<-- [start:series_struct]
-rating_Series = pl.Series(
+rating_series = pl.Series(
     "ratings",
     [
         {"Movie": "Cars", "Theatre": "NE", "Avg_Rating": 4.5},
         {"Movie": "Toy Story", "Theatre": "ME", "Avg_Rating": 4.9},
     ],
 )
-print(rating_Series)
+print(rating_series)
 # --8<-- [end:series_struct]
 
 # --8<-- [start:series_struct_extract]
-out = rating_Series.struct.field("Movie")
+out = rating_series.struct.field("Movie")
 print(out)
 # --8<-- [end:series_struct_extract]
 
 # --8<-- [start:series_struct_rename]
 out = (
-    rating_Series.to_frame()
+    rating_series.to_frame()
     .select(pl.col("ratings").struct.rename_fields(["Film", "State", "Value"]))
     .unnest("ratings")
 )

docs/user-guide/expressions/structs.md

@@ -45,7 +45,7 @@ Polars will interpret a `dict` sent to the `Series` constructor as a `Struct`:
 
 !!! note "Constructing `Series` objects"
 
-    Note that `Series` here was constructed with the `name` of the series in the begninng, followed by the `values`. Providing the latter first
+    Note that `Series` here was constructed with the `name` of the series in the beginning, followed by the `values`. Providing the latter first
     is considered an anti-pattern in Polars, and must be avoided.
 
 ### Extracting individual values of a `Struct`
@@ -60,7 +60,7 @@ Let's say that we needed to obtain just the `movie` value in the `Series` that w
 
 ### Renaming individual keys of a `Struct`
 
-What if we need to rename individual `field`s of a `Struct` column? We first convert the `rating_Series` object to a `DataFrame` so that we can view the changes easily, and then use the `rename_fields` method:
+What if we need to rename individual `field`s of a `Struct` column? We first convert the `rating_series` object to a `DataFrame` so that we can view the changes easily, and then use the `rename_fields` method:
 
 {{code_block('user-guide/expressions/structs','series_struct_rename',['struct.rename_fields'])}}
 
@@ -84,7 +84,7 @@ We can identify the unique cases at this level also with `is_unique`!
 
 ### Multi-column ranking
 
-Suppose, given that we know there are duplicates, we want to choose which rank gets a higher priority. We define _Count_ of ratings to be more important than the actual `Avg_Rating` themselves, and only use it to break a tie. We can then do:
+Suppose, given that we know there are duplicates, we want to choose which rank gets a higher priority. We define `Count` of ratings to be more important than the actual `Avg_Rating` themselves, and only use it to break a tie. We can then do:
 
 {{code_block('user-guide/expressions/structs','struct_ranking',['is_duplicated', 'struct'])}}