Update configuration.md

Author: meyerbaptiste

core/configuration.md

@@ -121,7 +121,7 @@ api_platform:
             client_partial: true
 
             # The name of the query parameter to enable or disable the partial pagination.
-            partial_parameter_name: partial # Default value
+            partial_parameter_name: 'partial' # Default value
 
     mapping:
         # The list of paths with files or directories where the bundle will look for additional resource files.