chore(lint): authorize single quote in yaml

Author: HEYGUL

.prettierrc

@@ -1,4 +1,15 @@
 {
   "tabWidth": 2,
-  "useTabs": false
+  "useTabs": false,
+  "overrides": [
+    {
+      "files": [
+        ".circleci/config.yml",
+        ".github/**/*.yaml"
+      ],
+      "options": {
+        "singleQuote": true
+      }
+    }
+  ]
 }