add changes section

Author: IlyasShabi

doc/api/n-api.md

@@ -2254,6 +2254,13 @@ object such that no properties can be set on it, and no prototype.
 
 #### `napi_typedarray_type`
 
+<!-- YAML
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/58879
+    description: Added `napi_float16_array` for Float16Array support.
+-->
+
 ```c
 typedef enum {
   napi_int8_array,