Improve properties example on debug serializer result

Author: loic425

serializer.rst

@@ -502,33 +502,33 @@ given class:
     $ php bin/console debug:serializer 'App\Entity\Book'
 
         App\Entity\Book
-        --------------------
-
-        +----------------+------------------------------------------------------------+
-        | Property       | Options                                                    |
-        +----------------+------------------------------------------------------------+
-        | firstArgument  | [                                                          |
-        |                |   "groups" => [                                            |
-        |                |       "book:read",                                         |
-        |                |       "book:write",                                        |
-        |                |   ]                                                        |
-        |                |   "maxDepth" => 1,                                         |
-        |                |   "serializedName" => "first_argument"                     |
-        |                |   "ignore" => false                                        |
-        |                |   "normalizationContexts" => [],                           |
-        |                |   "denormalizationContexts" => []                          |
-        |                | ]                                                          |
-        | secondArgument | [                                                          |
-        |                |   "groups" => [                                            |
-        |                |       "book:read",                                         |
-        |                |   ]                                                        |
-        |                |   "maxDepth" => null,                                      |
-        |                |   "serializedName" => null                                 |
-        |                |   "ignore" => false                                        |
-        |                |   "normalizationContexts" => [],                           |
-        |                |   "denormalizationContexts" => []                          |
-        |                | ]                                                          |
-        +----------------+------------------------------------------------------------+
+        ---------------
+
+        +----------+------------------------------------------------------------+
+        | Property | Options                                                    |
+        +----------+------------------------------------------------------------+
+        | name     | [                                                          |
+        |          |   "groups" => [                                            |
+        |          |       "book:read",                                         |
+        |          |       "book:write",                                        |
+        |          |   ]                                                        |
+        |          |   "maxDepth" => 1,                                         |
+        |          |   "serializedName" => "book_name"                          |
+        |          |   "ignore" => false                                        |
+        |          |   "normalizationContexts" => [],                           |
+        |          |   "denormalizationContexts" => []                          |
+        |          | ]                                                          |
+        | isbn     | [                                                          |
+        |          |   "groups" => [                                            |
+        |          |       "book:read",                                         |
+        |          |   ]                                                        |
+        |          |   "maxDepth" => null,                                      |
+        |          |   "serializedName" => null                                 |
+        |          |   "ignore" => false                                        |
+        |          |   "normalizationContexts" => [],                           |
+        |          |   "denormalizationContexts" => []                          |
+        |          | ]                                                          |
+        +----------+------------------------------------------------------------+
 
 .. versionadded:: 6.3