chore(docs): rename @newSquadNumber to @createdSquadNumber in players.rest

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nanotaboada

rest/players.rest

@@ -7,7 +7,7 @@
 @existingId             = acc433bf-d505-51fe-831e-45eb44c4d43c
 @nonexistentId          = 00000000-0000-0000-0000-000000000000
 @unknownId              = f47ac10b-58cc-4372-a567-0e02b2c3d479
-@newSquadNumber         = 27
+@createdSquadNumber     = 27
 @existingSquadNumber    = 23
 @nonexistentSquadNumber = 999
 @unknownSquadNumber     = 28
@@ -32,7 +32,7 @@ Content-Type: application/json
   "middleName": "",
   "lastName": "Lo Celso",
   "dateOfBirth": "1996-07-09T00:00:00.000Z",
-  "squadNumber": {{newSquadNumber}},
+  "squadNumber": {{createdSquadNumber}},
   "position": "Central Midfield",
   "abbrPosition": "CM",
   "team": "Real Betis Balompié",
@@ -53,7 +53,7 @@ Content-Type: application/json
   "middleName": "",
   "lastName": "Lo Celso",
   "dateOfBirth": "1996-07-09T00:00:00.000Z",
-  "squadNumber": {{newSquadNumber}},
+  "squadNumber": {{createdSquadNumber}},
   "position": "Central Midfield",
   "abbrPosition": "CM",
   "team": "Real Betis Balompié",
@@ -172,7 +172,7 @@ Content-Type: application/json
 ### Delete Player (existing)
 # DELETE /players/squadnumber/{squad_number} → 204 No Content
 # Requires: "Create Player (valid body)" above to have run first.
-DELETE {{baseUrl}}/players/squadnumber/{{newSquadNumber}}
+DELETE {{baseUrl}}/players/squadnumber/{{createdSquadNumber}}
 
 ###