Use formatted date

Signed-off-by: Vitor Mattos <vitor@php.rio>

Author: vitormattos

site/.vuepress/public/specs/api.yaml

@@ -817,9 +817,8 @@ paths:
                               example: John Doe
                             signed:
                               type: string
-                              pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                               description: 'Signing date, when signed'
-                              example: '2021-12-31 22:45:50'
+                              example: February 28, 2024, 11:17:43 PM
                               nullable: true
                             request_sign_date:
                               type: string
@@ -1054,9 +1053,8 @@ paths:
                               example: John Doe
                             signed:
                               type: string
-                              pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                               description: 'Signing date, when signed'
-                              example: '2021-12-31 22:45:50'
+                              example: February 28, 2024, 11:17:43 PM
                               nullable: true
                             request_sign_date:
                               type: string
@@ -1678,9 +1676,8 @@ paths:
                           properties:
                             signed:
                               type: string
-                              pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                               description: 'Signing date, when signed'
-                              example: '2021-12-31 22:45:50'
+                              example: February 28, 2024, 11:17:43 PM
                               nullable: true
                             request_sign_date:
                               type: string
@@ -1881,9 +1878,8 @@ paths:
                           properties:
                             signed:
                               type: string
-                              pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                               description: 'Signing date, when signed'
-                              example: '2021-12-31 22:45:50'
+                              example: February 28, 2024, 11:17:43 PM
                               nullable: true
                             request_sign_date:
                               type: string
@@ -2082,9 +2078,8 @@ paths:
                           properties:
                             signed:
                               type: string
-                              pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                               description: 'Signing date, when signed'
-                              example: '2021-12-31 22:45:50'
+                              example: February 28, 2024, 11:17:43 PM
                               nullable: true
                             request_sign_date:
                               type: string
@@ -2870,10 +2865,9 @@ components:
               signed:
                 type: string
                 format: date-time
-                pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
                 nullable: true
                 description: Date the file was signed
-                example: '2021-12-31 22:45:50'
+                example: February 28, 2024, 11:17:43 PM
               request_sign_date:
                 type: string
                 format: date-time