Add default value of ligatures in help

[TheCoolDinosuar]

In :h vimtex_syntax_conceal, the code that shows the default value doesn't show the value of g:vimtex_syntax_conceal.ligatures, which is 1.
This is what it is currently:

    let g:vimtex_syntax_conceal = {
          \ 'accents': 1,
          \ 'cites': 1,
          \ 'fancy': 1,
          \ 'greek': 1,
          \ 'math_bounds': 1,
          \ 'math_delimiters': 1,
          \ 'math_fracs': 1,                                                                                                  
          \ 'math_super_sub': 1,
          \ 'math_symbols': 1,
          \ 'sections': 0,
          \ 'styles': 1,
          \}

Solution:
In doc/vimtex.txt It should be

    let g:vimtex_syntax_conceal = {
          \ 'accents': 1,
          \ 'ligatures': 1,
          \ 'cites': 1,
          \ 'fancy': 1,
          \ 'greek': 1,
          \ 'math_bounds': 1,
          \ 'math_delimiters': 1,
          \ 'math_fracs': 1,                                                                                                  
          \ 'math_super_sub': 1,
          \ 'math_symbols': 1,
          \ 'sections': 0,
          \ 'styles': 1,
          \}

I'm not sure if opening an issue is the correct way to report such a small issue, or if I should create a pr instead. Thank you for creating this plugin!

[lervag]

In :h vimtex_syntax_conceal, the code that shows the default value doesn't show the value of g:vimtex_syntax_conceal.ligatures, which is 1.

Thanks! Nice catch! I've updated now.

I'm not sure if opening an issue is the correct way to report such a small issue, or if I should create a pr instead. Thank you for creating this plugin!

This was perfect. PR is of course also great, but not necessary for such simple things.

And glad to hear you like the plugin!