Update REST API

REST-API.md

@@ -103,8 +103,8 @@ Value | Meaning
 </code></pre>
 
 <h3><code>GET /positions/list</code></h3>
-<p>getting a list of  trades in the db</p>
-<pre><code class="language-bash">curl -X POST http://localhost:8080/trade/list </code></pre>
+<p>getting a list of  all position </p>
+<pre><code class="language-bash">curl -X POST http://localhost:8080/positions/list </code></pre>
 <pre><code>return:
 
 {