Update code snippets to be Spark Connect compatible

Here is [an example blog post](https://delta.io/blog/2022-10-25-create-delta-lake-tables/) that uses the old syntax:

```python
columns = ["character", "franchise"]
data = [("link", "zelda"), ("king k rool", "donkey kong"), ("samus", "metroid")]
rdd = spark.sparkContext.parallelize(data)
df = rdd.toDF(columns)
```

It would be great to update this post (and all the other code snippets in blog posts) to be Spark Connect compatible.