docs: no default value for mod_proxy upgrade= parameter. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1907045 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/mod_proxy.xml b/docs/manual/mod/mod_proxy.xml
index e73b3abbebc3e12338faa80c53a12e2a46a94639..2f71343e810a99c20b975d70bf503342833faa76 100644 (file)
--- a/docs/manual/mod/mod_proxy.xml
+++ b/docs/manual/mod/mod_proxy.xml
@@ -1281,7 +1281,7 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300
         See the documentation of this module for more details.</p>
     </td></tr>
     <tr><td><a id="upgrade" name="upgrade">upgrade</a></td>
-        <td>WebSocket</td>
+        <td>-</td>
         <td><p>Protocol accepted by <module>mod_proxy_http</module> or
         <module>mod_proxy_wstunnel</module> for the HTTP Upgrade mechanism
         upon negotiation by the HTTP client/browser (per