Adjusts CircleCI config for correct YAML syntax (#43)

* Changes the spacing in the docker section, possible yaml is choking on that

* Possibly futile adjustments in spacing and order of filters

* Filters might belong under schedule instead given the unhelpful errors in schema format

.circleci/config.yml

@@ -1,19 +1,20 @@
+---
 version: 2
 defaults: &defaults
   docker:
-      - image: circleci/ruby:2.4.4-node
-        environment:
-          BUNDLE_JOBS: 3
-          BUNDLE_RETRY: 3
-          BUNDLE_PATH: vendor/bundle
-          PGHOST: 127.0.0.1
-          PGUSER: railslink
-          RAILS_ENV: test
-      - image: circleci/postgres:9.6.8-alpine
-        environment:
-          POSTGRES_USER: railslink
-          POSTGRES_DB: ruby_on_rails_link_test
-          POSTGRES_PASSWORD: ""
+    - image: circleci/ruby:2.4.4-node
+      environment:
+        BUNDLE_JOBS: 3
+        BUNDLE_RETRY: 3
+        BUNDLE_PATH: vendor/bundle
+        PGHOST: 127.0.0.1
+        PGUSER: railslink
+        RAILS_ENV: test
+    - image: circleci/postgres:9.6.8-alpine
+      environment:
+        POSTGRES_USER: railslink
+        POSTGRES_DB: ruby_on_rails_link_test
+        POSTGRES_PASSWORD: ""
 jobs:
   build:
     parallelism: 3
@@ -117,8 +118,9 @@ workflows:
       - security
     triggers:
       - schedule:
-        cron: "0 0 * * *"
-        filters:
-          branches:
-            only:
-              - master
+          cron: "0 0 * * *"
+          filters:
+            branches:
+              only:
+                - master
+