Update README.rst

Fix an error where bumpr rolled the number incorrectly.

Author: peter-doggart

README.rst

@@ -65,7 +65,7 @@ Flask and Werkzeug moved to versions 2.0 in March 2020. This caused a breaking c
     * - == 1.2.0
       - < 3.0.0
       - pinned in Flask-RESTX.
-    * - >= 1.3.1.dev
+    * - >= 1.3.0
       - >= 2.0.0 (Flask >= 3.0.0 support)
       - unpinned, import statements wrapped for compatibility
     * - trunk branch in Github