* todos.el (todos-show-categories-table): Correct doc string.

* todos.el (todos-show-categories-table): Correct doc string.
(todos-sort-categories-alphabetically-or-numerically): Rename from
todos-sort-categories-alphabetically-or-by-priority and adjust uses.
(todos-set-category-number): Rename from
todos-set-category-priority and adjust uses.
(todos-raise-category): Rename from todos-raise-category-priority
and adjust uses.
(todos-lower-category): Rename from todos-lower-category-priority
and adjust uses.