Proposal: Add Documentation for game_id Parameter in parameters.md

[gmortensen]

The parameters.md file includes a section for the game_id parameter but currently lacks detailed information. To improve clarity and usability, the following details could be added:

Expected Format:
The game_id should be a 10-digit number. The expected format can be validated using the regex ^\d{10}$.

Meaning of the Third Digit:
The third digit in the game_id indicates the type of season. Here are the details:

1: Preseason game
2: Regular season game
3: All-Star weekend game
4: Playoff game
5: Play-in game

Examples:

0022200147: Regular season game (third digit is 2)
0012200147: Preseason game (third digit is 1)

Proposal:
Update the game_id section in the parameters.md file to include the expected format and an explanation of the third digit's significance.

[gmortensen]

NBA API Version
V1.5.0