Update rest-api-spec

Author: pquentin

specification/_json_spec/inference.put.mistral.json

@@ -1,8 +1,8 @@
 {
-  "inference.put_voyageai": {
+  "inference.put_eis": {
     "documentation": {
-      "url": "https://www.elastic.co/guide/en/elasticsearch/reference/current/infer-apis.html",
-      "description": "Configure an VoyageAI inference endpoint"
+      "url": "https://www.elastic.co/guide/en/elasticsearch/reference/current/infer-service-elastic.html",
+      "description": "Configure an inference endpoint that uses the Elastic Inference Service (EIS)"
     },
     "stability": "stable",
     "visibility": "public",
@@ -13,14 +13,14 @@
     "url": {
       "paths": [
         {
-          "path": "/_inference/{task_type}/{voyageai_inference_id}",
+          "path": "/_inference/{task_type}/{eis_inference_id}",
           "methods": ["PUT"],
           "parts": {
             "task_type": {
               "type": "string",
               "description": "The task type"
             },
-            "voyageai_inference_id": {
+            "eis_inference_id": {
               "type": "string",
               "description": "The inference ID"
             }