Comprehensive grammar sweep

[ToxiClay]

Summary

SUMMARY: None

Purpose of change

The purpose of this change is to correct, standardize, and prettify the texts.json file that controls what is displayed in the game's Help menu.

Describe the solution

I sat down and went over the file.

Describe alternatives you've considered

None.

Testing

Attempting to lint the file resulted in a syntax error alert. Impact unknown.

Additional context

[actual-nh]

Definite improvements!

[ToxiClay]

All proposed changes reviewed and incorporated, to one extent or another.

Lingering issue: in most cases, the Help screen uses a dynamic replacement for buttons, like <press_fire> and <press_examine>, but there are still places where static string literals are used instead.

To fire, press <press_fire>, move the cursor to the desired tile, press '.' to improve your aim, and then 'f' to fire. Additionally, you may want to fire at predefined aim levels using 'a', 'c' or 'p'.

I couldn't find where the codebase sets out what the <press_X> equivalents are for these, and so I couldn't update them. Assistance here would be appreciated.

[actual-nh]

See data/raw/keybindings.json#L1040. Looks like <press_aim>, <press_aimed_shot>, <press_careful_shot>, and <press_precise_shot> should work, although this will require testing.

[ToxiClay]

See data/raw/keybindings.json#L1040. Looks like <press_aim>, <press_aimed_shot>, <press_careful_shot>, and <press_precise_shot> should work, although this will require testing.

It seems not...fortunately, I can test JSON edits without needing to build CDDA from source.

<press_pause> is valid in place of <press_aim>, and both . and 5 work in game. I can't determine what to put in for the others.

[actual-nh]

Hrm. Ah. I think I see where I went wrong. It looks like only ones in action.cpp's action_ident or look_up_action work... which doesn't include any of these at the moment. Change in a future PR, perhaps.