fix(doc/api-and-naming.md): fix a spelling mistake

Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>

Author: akinomyoga

doc/api-and-naming.md

@@ -48,7 +48,7 @@ the shell's environment.
 | private non-local mutable variables | `_comp__*_mut_*`    | `_comp_cmd_${Command}__mut_${Data}`                                                   |
 | exporter function local variables   | `_*` (not `_comp*`) | `_*` (not `_comp*`)                                                                   |
 | public/exported functions           | `_comp_*`           | `_comp_xfunc_${Command}_${Utility}` (functions for use with `_comp_xfunc`)            |
-| - completors (for `complete -F`)    | `_comp_complete_*`  | `_comp_cmd_${Command}`                                                                |
+| - completers (for `complete -F`)    | `_comp_complete_*`  | `_comp_cmd_${Command}`                                                                |
 | - generators                        | `_comp_compgen_*`   | `_comp_xfunc_${Command}_compgen_${Name}` (generators for use with `_comp_compgen -x`) |
 | private/internal functions          | `_comp__*`          | `_comp_cmd_${Command}__${Utility}` (utility functions)                                |
 | - generators                        |                     | `_comp_cmd_${Command}__compgen_${Name}` (generators for use with `_comp_compgen -i`)  |