1.0: Add document for YAML config format

Signed-off-by: Hiroshi Hatake <hatake@calyptia.com>

Author: cosmo0920

.gitbook.yaml

@@ -36,6 +36,7 @@ redirects:
   v1.0/articles/format-section: configuration/format-section.md
   v1.0/articles/parse-section: configuration/parse-section.md
   v1.0/articles/config-file: configuration/config-file.md
+  v1.0/articles/config-file-yaml: configuration/config-file-yaml.md
   v1.0/articles/storage-section: configuration/storage-section.md
 
   # Deployment

SUMMARY.md

@@ -19,6 +19,7 @@
   * [Post Installation Guide](installation/post-installation-guide.md)
 * [Configuration](configuration/README.md)
   * [Config File Syntax](configuration/config-file.md)
+  * [Config File Syntax (YAML)](configuration/config-file-yaml.md)
   * [Routing Examples](configuration/routing-examples.md)
   * [Config: Common Parameters](configuration/plugin-common-parameters.md)
   * [Config: Parse Section](configuration/parse-section.md)