Fix file upload failures due to incorrectly set content headers. #42

Author: mkht

Private/Initialize-OpenAIAPIRequestParam.ps1

@@ -119,6 +119,7 @@ function Initialize-OpenAIAPIRequestParam {
         }
     }
     $InternalParams.Body = $Body
+    $InternalParams.ContentType = $ContentType
 
     return $InternalParams
 }