naming

Author: chargome

develop-docs/sdk/data-model/envelope-items.mdx

@@ -461,7 +461,7 @@ _None_
 
 Item type `"trace_metric"` contains an array of metric payloads encoded as JSON. This allows for multiple metric payloads to be sent in a single envelope item.
 
-Only a single trace_metric container is allowed per envelope. The `item_count` field in the envelope item header must match the amount of metrics sent, it's not optional. A `content_type` field in the envelope item header must be set to `application/vnd.sentry.items.trace_metric+json`.
+Only a single trace_metric container is allowed per envelope. The `item_count` field in the envelope item header must match the amount of metrics sent. A `content_type` field in the envelope item header must be set to `application/vnd.sentry.items.trace-metric+json`. Both the `item_count` and `content_type` fields are required.
 
 It's okay to mix metrics from different traces into the same trace_metric envelope item, but if you do, you MUST not attach a DSC (dynamic sampling context) to the envelope header.
 
@@ -474,7 +474,7 @@ Example:
 {
 	"type": "trace_metric",
 	"item_count": 5,
-	"content_type": "application/vnd.sentry.items.trace_metric+json"
+	"content_type": "application/vnd.sentry.items.trace-metric+json"
 }
 {
 	"items": [{..metric..}, {..metric..}, {..metric..}, {..metric..}, {..metric..}]
@@ -497,7 +497,7 @@ _None_
 
 `content_type`
 
-: **string, required.** The content type of the metric entries. Must be `application/vnd.sentry.items.trace_metric+json`.
+: **string, required.** The content type of the metric entries. Must be `application/vnd.sentry.items.trace-metric+json`.
 
 ### Reserved Types