minor #15311 [API] fix prefix url on locale api path (oallain)

This PR was merged into the 1.12 branch.

Discussion
----------

| Q               | A                                                            |
|-----------------|--------------------------------------------------------------|
| Branch?         | 1.12          |
| Bug fix?        | yes                                                       |
| New feature?    | no                                                       |
| BC breaks?      | no                                                       |
| Deprecations?   | no <!-- don't forget to update the UPGRADE-*.md file --> |
| Related tickets |                        |
| License         | MIT                                                          |

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Commits
-------
  fix prefix url on locale api path
  fix prefix url on order api path

src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Locale.xml

@@ -22,7 +22,7 @@
         <collectionOperations>
             <collectionOperation name="admin_get">
                 <attribute name="method">GET</attribute>
-                <attribute name="path">admin/locales</attribute>
+                <attribute name="path">/admin/locales</attribute>
                 <attribute name="normalization_context">
                     <attribute name="groups">admin:locale:read</attribute>
                 </attribute>
@@ -31,15 +31,15 @@
 
             <collectionOperation name="admin_post">
                 <attribute name="method">POST</attribute>
-                <attribute name="path">admin/locales</attribute>
+                <attribute name="path">/admin/locales</attribute>
                 <attribute name="denormalization_context">
                     <attribute name="groups">admin:locale:create</attribute>
                 </attribute>
             </collectionOperation>
 
             <collectionOperation name="shop_get">
                 <attribute name="method">GET</attribute>
-                <attribute name="path">shop/locales</attribute>
+                <attribute name="path">/shop/locales</attribute>
                 <attribute name="normalization_context">
                     <attribute name="groups">shop:locale:read</attribute>
                 </attribute>
@@ -49,15 +49,15 @@
         <itemOperations>
             <itemOperation name="admin_get">
                 <attribute name="method">GET</attribute>
-                <attribute name="path">admin/locales/{code}</attribute>
+                <attribute name="path">/admin/locales/{code}</attribute>
                 <attribute name="normalization_context">
                     <attribute name="groups">admin:locale:read</attribute>
                 </attribute>
             </itemOperation>
 
             <itemOperation name="shop_get">
                 <attribute name="method">GET</attribute>
-                <attribute name="path">shop/locales/{code}</attribute>
+                <attribute name="path">/shop/locales/{code}</attribute>
                 <attribute name="normalization_context">
                     <attribute name="groups">shop:locale:read</attribute>
                 </attribute>

src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Order.xml

@@ -21,7 +21,7 @@
         <collectionOperations>
             <collectionOperation name="admin_get">
                 <attribute name="method">GET</attribute>
-                <attribute name="path">admin/orders</attribute>
+                <attribute name="path">/admin/orders</attribute>
                 <attribute name="normalization_context">
                     <attribute name="groups">admin:order:read</attribute>
                 </attribute>