nvim: Fix bibcite insertion position

Fixed the position of my BibTex citations to be in front of the cursor
not appended to it (i.e. using `i` instead of `a`).

That means for example `sometext <insertioninvoked>.` will put the
insertion *before* the full stop instead of after it, which was kind of
weird.

nvim/.config/nvim/after/plugin/bibcite.vim

@@ -20,7 +20,7 @@ endfunction
 " insert citation from normal mode at cursor (with brackets)
 function! s:bibtex_cite_sink(lines)
     let r=system("bibtex-cite ", a:lines)
-    execute ':normal! a[' . r . ']'
+    execute ':normal! i[' . r . ']'
 endfunction
 command! -bang -nargs=* CiteRef call fzf#run(fzf#wrap({
       \ 'source': <sid>bibtex_ls(<q-args>),

nvim/.config/nvim/spell/en.utf-8.add

@@ -98,3 +98,4 @@ weaponization
 blog
 flexicurity
 indices
+Anthropocene