Doc: `bind_tweet_jsons` has been mistyped twice in the code

[chainsawriot]

Describe the bug

bind_tweet_jsons has been mistyped as bind_tweets_json twice in the output. It may hint at the cognitive load needed to remember this function name (where should I put the "s"?).

[cjbarrie]

You're right. And, in truth, there is no need to have two functions bind_tweet_jsons() and bind_user_jsons().

One function e.g. called bind_tweets, with an argument specifying if user wants to bind data_* or users_* JSON files. This would also be more consistent with the bind_tweets argument in the get_all_tweets() function