Update vim-tex compiler

vim/ftplugin/tex.vim

@@ -7,6 +7,7 @@ endif
 
 let g:latex_view_general_viewer = 'zathura'
 let g:vimtex_view_method = 'zathura'
+let g:vimtex_compiler_progname = 'nvr'
 
 if has("nvim")
     if !exists('g:deoplete#omni#input_patterns')