rest-api-spec: fix master_timeout typo (#135167)

rest-api-spec/src/main/resources/rest-api-spec/api/streams.status.json

@@ -23,7 +23,7 @@
       ]
     },
     "params": {
-      "mater_timeout": {
+      "master_timeout": {
         "type": "time",
         "description": "Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error."
       }