docs(openapi): align validation descriptions with unified files collection

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

openapi.json

@@ -4237,7 +4237,7 @@
             "get": {
                 "operationId": "file-validate-uuid",
                 "summary": "Validate a file using Uuid",
-                "description": "Validate a file returning file data. When `nodeType` is `envelope`, the response includes `filesCount` and `files` as a list of envelope child files.",
+                "description": "Validate a file returning file data. The response always includes `filesCount` and `files`. For `nodeType=file`, `filesCount=1` and `files` contains the current file. For `nodeType=envelope`, `files` contains envelope child files.",
                 "tags": [
                     "file"
                 ],
@@ -4390,7 +4390,7 @@
             "get": {
                 "operationId": "file-validate-file-id",
                 "summary": "Validate a file using FileId",
-                "description": "Validate a file returning file data. When `nodeType` is `envelope`, the response includes `filesCount` and `files` as a list of envelope child files.",
+                "description": "Validate a file returning file data. The response always includes `filesCount` and `files`. For `nodeType=file`, `filesCount=1` and `files` contains the current file. For `nodeType=envelope`, `files` contains envelope child files.",
                 "tags": [
                     "file"
                 ],
@@ -4544,7 +4544,7 @@
             "post": {
                 "operationId": "file-validate-binary",
                 "summary": "Validate a binary file",
-                "description": "Validate a binary file returning file data. Use field 'file' for the file upload. When `nodeType` is `envelope`, the response includes `filesCount` and `files` as a list of envelope child files.",
+                "description": "Validate a binary file returning file data. Use field 'file' for the file upload. The response always includes `filesCount` and `files`. For `nodeType=file`, `filesCount=1` and `files` contains the current file. For `nodeType=envelope`, `files` contains envelope child files.",
                 "tags": [
                     "file"
                 ],