fix yaml-lint errors

crowdin.yml

@@ -1,3 +1,4 @@
+---
 "base_path": "."
 "base_url": "https://api.crowdin.com"  # optional (for Crowdin Enterprise only)
 "preserve_hierarchy": false  # flatten tree on crowdin
@@ -6,10 +7,10 @@
   "l10n"
 ]
 
-"files" : [
+"files": [
   {
-    "source" : "/locale/*.po",
-    "translation" : "/locale/%two_letters_code%/LC_MESSAGES/%original_file_name%",
+    "source": "/locale/*.po",
+    "translation": "/locale/%two_letters_code%/LC_MESSAGES/%original_file_name%",
     "languages_mapping": {
       "two_letters_code": {
         # map non-two letter codes here, left side is crowdin designation, right side is babel designation