Update csscomb properties. 'colon-spac'e and 'stick-brace' don't take boolean values.

less/.csscomb.json

 {
   "always-semicolon": true,
   "block-indent": 2,
-  "colon-space": true,
+  "colon-space": [0, 1],
   "color-case": "lower",
   "color-shorthand": true,
   "combinator-space": true,
@@ -10,7 +10,7 @@
   "leading-zero": false,
   "remove-empty-rulesets": true,
   "rule-indent": 2,
-  "stick-brace": true,
+  "stick-brace": " ",
   "strip-spaces": true,
   "unitless-zero": true,
   "vendor-prefix-align": true,