Correct grammatical mistake in Main Script header of Your First 2D Game

**Your Godot version:** 4.7

**Issue description:**
This is a low-priority issue (grammar) but will help the tutorial doc's consistency.

**Navigation:**
Docs > Getting Started > Your first 2D game > Contents > The main game scene > Main script

**The current text reads**:
"Once all three timers have this set up, you should be able to see each timer have a Signal connection for their respective `timeout()` signal, showing in green, within their respective Signals tabs:"

**The revised text should read**:
"Once all three timers have this set up, you should be able to see each timer _has_ a Signal connection for their respective `timeout() `signal, showing in green, within their respective Signals tabs:"

**Subject-verb agreement**:
each _timer_ (singular) has
all of the _timers_ (plural) have

Alternatively the text could read "you should be able to see each of the timers has" or "you should see each timer has"

**https://docs.godotengine.org/en/stable/getting_started/first_2d_game/05.the_main_game_scene.html#main-script**

Open the linked Your first 2D game documentation page and navigate to The main game scene > Main script. Locate the quoted paragraph, correct the subject-verb agreement and punctuation as described, then verify the rendered documentation shows the revised wording.

Written by the indexing model from the issue text.