fix: wrong markdown checkbox

Author: pelyib

TODO.md

@@ -5,17 +5,17 @@ Until github issues
 ## UI
 
 - [x] Use [chartjs](https://www.chartjs.org/docs/latest/getting-started/installation.html) to draw charts
-- [] Fill the area between min_min and min_max, max_min and max_max, use chartjs [filling modes](https://www.chartjs.org/docs/latest/charts/area.html#filling-modes)
+- [ ] Fill the area between min_min and min_max, max_min and max_max, use chartjs [filling modes](https://www.chartjs.org/docs/latest/charts/area.html#filling-modes)
 min_max, max_min `line` data should be hidden (`data.*.datasets.showLine: false`)
-- [] Use smooth lines (e.g.: `datasets.*.tension: 0.4`)
+- [ ] Use smooth lines (e.g.: `datasets.*.tension: 0.4`)
 
 ## Backend
 
-- [] Add "raw_reponses" to all sources, persist raw responses from the origin resources.
-- [] Make accessable raw_reponses on HTTP
-- [] Start to write tests
-- [] Create min_max and max_min `line` dataset
+- [ ] Add "raw_reponses" to all sources, persist raw responses from the origin resources.
+- [ ] Make accessable raw_reponses on HTTP
+- [ ] Start to write tests
+- [ ] Create min_max and max_min `line` dataset
 
 ## Bug
 
-- [] Find the reason for incorrect min and max values (e.g.: Trier 16-23.09.2022)
+- [ ] Find the reason for incorrect min and max values (e.g.: Trier 16-23.09.2022)