Fix overview.html for Java 11 compatibility

artembilan · artembilan · commit 7faeceb6b5e6 · 2021-12-07T12:35:02.000-05:00
diff --git a/src/api/overview.html b/src/api/overview.html
@@ -1,7 +1,7 @@
 <html>
 <body>
 This document is the API specification for Spring Integration
-<hr/>
+<hr>
 <div id="overviewBody">
     <p>
         For further API reference and developer documentation, see the
