Fix default value of time_type for parse-section again

Signed-off-by: ktarow <ktarou569@gmail.com>

Author: ktarow

configuration/parse-section.md

@@ -143,7 +143,7 @@ For the `types` parameter, the following types are supported:
 
   type
 
-  * Default: `float`
+  * Default: `string`
   * Available values: `float`, `unixtime`, `string`, `mixed`
     * `float`: seconds from Epoch + nano seconds \(e.g.