Update Document-English.md

TommyLemon · web-flow · commit 3d11d701f8c6 · 2022-10-18T01:32:02.000+08:00
diff --git a/Document-English.md b/Document-English.md
@@ -1,6 +1,6 @@
 ### Examples:
 
-#### Get a User
+#### Get an User
 Request:
 <pre><code class="language-json">{
   "User":{
