Update generated nvim config

config/neovim/store/lazy-plugins/vimtex/test/test-completion-documentclass/Makefile

@@ -0,0 +1,9 @@
+.PHONY: test
+
+MYVIM ?= nvim --clean --headless
+
+INMAKE := 1
+export INMAKE
+
+test:
+	@$(MYVIM) -u test.vim

config/neovim/store/lazy-plugins/vimtex/test/test-completion-documentclass/main.tex

@@ -0,0 +1,4 @@
+\documentclass{minimal}
+\begin{document}
+
+\end{document}

config/neovim/store/lazy-plugins/vimtex/test/test-completion-documentclass/test.vim

@@ -0,0 +1,14 @@
+set nocompatible
+let &rtp = '../..,' . &rtp
+filetype plugin on
+
+nnoremap q :qall!<cr>
+
+silent edit main.tex
+
+if empty($INMAKE) | finish | endif
+
+let s:candidates = vimtex#test#completion('\documentclass{', 'mini')
+call assert_equal(s:candidates[0].word, 'minimal')
+
+call vimtex#test#finished()