Fix time for 2023 AGM

Author: NilsIrl

minutes/agm2023-03-12.html

@@ -4,7 +4,7 @@ <h1><!--#echo encoding="none" var="title" --></h1>
 <div id="doc" class="markdown-body container-fluid">
 	<p>
     Date: 12/03/2023<br />
-    Time: 16:00<br />
+    Time: 15:00<br />
     Venue: Cambridge University Engineering Department, Trumpington Street, Cambridge
   </p>
   <h2 id="In-attendance">Members in attendance</h2>