vim-patch:8.2.3914 (#16808)

* vim-patch:8.2.3914: various spelling mistakes in comments

Problem:    Various spelling mistakes in comments.
Solution:   Fix the mistakes. (Dominique Pellé, closes vim/vim#9416)
af4a61a85d

Co-authored-by: zeertzjq <zeertzjq@outlook.com>

src/nvim/fold.c

@@ -2332,7 +2332,7 @@ static linenr_T foldUpdateIEMSRecurse(garray_T *const gap, const int level,
        * firstlnum.
        */
       while (!got_int) {
-        // set concat to 1 if it's allowed to concatenated this fold
+        // set concat to 1 if it's allowed to concatenate this fold
         // with a previous one that touches it.
         if (flp->start != 0 || flp->had_end <= MAX_LEVEL) {
           concat = 0;